1

DELHI PUBLIC SCHOOL GHAZIABAD

HOLIDAY HOMEWORK SESSION 2018-19 CLASS XI

STREAM: -COMMERCE AND HUMANITIES

INTERNSHIP AND COMPULSORY COMMUNITY CONNECT PROGRAMME :

NOTE: As per CBSE guidelines, all the students are required to constructively use

their time during vacation by doing internship in any organization /chemist shop

/retail outlets or work under doctors, engineers, CA , Advocates for a minimum

period of 15 days or attend summer programmes at National Science Centre. The

students must get experience certificate clearly mentioning the area of work and days

they interned. Grades will be assigned based on the proof provided by the student.

Proof can be in the form of(work Experience certificate / letter / photograph etc.)

Community groups, clubs and organisations are an important part which makes a

society a great place to live. Helping people within the community to connect with

groups and organisations whether it be for the purpose of recreation, support or

services is also really important for an overall development of individuals. Keeping

this in view the students should associate themselves with any one or multiple

activities as mentioned below—

students may work as an intern with an NGO and associate themselves with an

ngoing project and bring appropriate proof for the same.

Taking initiative to spread awareness and educating students belonging to the less

privileged section of the society by offering services in schools for specially abled/

schools run by NGOs

Provide basic education to the domestic help by giving free coaching for three hours

a week.

Initiate plantation drives in the locality by planting stem root trees

(neem/peepal/banyan/mango/jamun/kalpvriksh etc) in your neighbourhood with the

view of creating a greener environment for local population.

Educate neighbours on how to divide /segregate biodegradable garbage from the non

biodegradable one

Visiting old age homes and spending quality time with the inmates.

– Educating people on the adverse effects of using plastics. Be a part of a cleanliness

drive and try to influence others to do the same

You may opt for any one activity or be a part of more than one. You need to maintain a progress chart and

keep pictures of your activities as evidences.

1.ENGLISH CORE

Read the novel ‘The Kite Runner’ by Khaled Hosseini and on the basis of your reading, prepare the

following:

Power Point Presentation(min 8 slides) (to be mailed to respective subject teachers)

Project File based on the following points:

2

Theme

Character Analysis of the main characters

Major Events

Recently, Delhi High Court questioned the rationale behind the amendment to certain laws. This

resulted in amendment in the Prevention of Children from Sexual Offences (POCSO) Act, 2012.Write

a letter to the Editor of the ‘Hindustan Times’ expressing your concern and suggesting how cities can

be made safe for women.

Choose a person from the field of literature that you are most inspired by. Read the

biography/autobiography of the person. On a chart paper-

Paste the picture of the person.

Write a brief character sketch.

Mention one episode from the person’s life and the way it has motivated you.

Mention one thing that the person should not have done/or could have done differently.

Collect information about your grandparent by interviewing your parents, relatives, grandparents’ friends etc and write a biography based on their life in about 1000 words. Also paste pictures

validating events from their lives

Please Note the specifications for the English Project stated below

To be done on A-4 Size sheets/ chart paper

To be handwritten in blue and black ink

Pictorial illustrations for the biography

2. ACCOUNTANCY:

Visit to Not for profit making organisation(Hospital ,school, college,club ETC) of your choice .

Write down ten accounting transactions & prepare voucher for each transaction. Show the

accounting equation based on these transactions.

Do internship with CA for fifteen days . (certificate is also required)

3. MATHEMATICS

Following working Models on hard board with complete research by group of six students ;

Roll number 1 to 6 ; Octants, Roll number 7to 12; Concepts of sets and subsets, Roll

number 13 to 18; Conic sections in everyday life, Roll number 19 to 24; Survey of your society

for finding mean, median base on any parameter,

Roll number 25 to 30; Super hexagon for trignometrical identities, Roll number 31 to 36;

Transforming Circles. Rest students will be made on Conic section in everyday life.

Q.1. Solve:− + > , when

(i) is a real number, (ii) is a natural number

Q.2. Solve the following system of linear inequations + − − + ; − − + − . Q.3. Solve the following systems of inequalities graphically

(i) + , + , + , , . (ii) + , + , + . (iii) − , − − , , . Q.4. Solve the following inequations

(i) 𝑥+5𝑥− > (ii)

5𝑥−𝑥+5 <

Q.5. Solve the following inequations

3

(i) | + | > (ii) | − | | |

Q.6 .Apples are kept best in cold storage if they are held above freezing, but not at greater than 50c

i.e. 0 < C0

< 50C . What is the corresponding Fahrenheit temperature? If the conversion formula is

given by 𝐶 = 5 𝐹 − . Q.7. On Republic Day eve a person manufactures shirts with National Flag embedded on it, the

cost and revenue of shirts is given by C(x) = 20 x + 4000 and R(x) = 60 x + 2000 respectively

where x is the number of shirts manufactured and sold. How many shirts should be manufactured and

sold to realize profit? Which value system he posses with a mixture of his business?

Q.8. A milkman has 80% milk in his stock of 800 litres of adulterated milk. How much 100%

pure milk is to be added to it so that purity is between 90% and 95%. How much pure milk should

add to his stock to obtain 99% pure milk? What should be done to stop adulteration in foods? Write

your views.

Q.9. A furniture dealer deals in only two items: tables and chairs. He has Rs. 15000 to invest and a

space to store at most 60 pieces. A table costs him Rs. 750 and a chair Rs. 150. Formulate the data in

the form of inequations and draw a graph representing the solution of these inequations.

Q.10 Find the ratio in which xy plane divides the joining of (2,4,-3) and ( -3,5,4)

Q.11 Find the reflection (image) of the point P(x, y, z) in x y-plane

Q.12 Find the coordinates of the centriod of the triangle whose vertices are (1, 5, 2), (3, 2, 7) and (-

7,-1, 4). {-1,2, }

Q.13 Find the length of the foot of perpendicular from the point P (a, b, c) on z-axis.

{√ + }

Q.14 Using section formula, show that points (-4, 6, 10), (2, 4, 6) and (14, 0, -2) are collinear.

Q.15 Find the lengths of the medians of the triangle ABC with vertices A(0,0,6), B(0,4,0) and

C(6,0,0).

Q.16 Find the equation of the path of P which moves such that PA2 + PB

2= 2K

2, where A and B are

the points (3, 4, 5) and (-1, 3, -7) respectively

Q.17 Find the ratio in which the line segment having the end points A (-1,-3,4) and B(4,2,-1) is

divided by the XZ plane. Also find the coordinates of the point of division. Ans:3:2; (2,0,1)

Q.18 The vertices of a triangle ABC are A(3,2,0) B(5,3,2) and C(-9,6,-3). The bisector AD of A

meets BC at D. Find coordinates of D.

Q.19 Find the value of so that so that the distance between the points (7,1, -3) and (4,5, ) is 13

units.

4. BUSINESS STUDIES

Prepare Business Plan for any product. Refer to ‘Starting a Business’ points from chapter 1 of

Business studies NCERT Book with costing present in PPT format.

5. HISTORY

Prepare Models on

1. evolution of early man

2. food habits of early man

3. regional continuity model and replacement model

4. evolution of hands ,evolution of skull of early man

4

Projects

Prepare a proper questionnaire related to your topic and do a small survey.

1. Relationship between present day hunter and gathering society to early society.

2. Urbanization and development of cities (past to present)

3. Evolution of society stone to electronic age

6. POLITICAL SCIENCE

Compare features of US ,India , Japan Constitution in detail. Do it A4 size blank sheets.

Internships in Political science:

1. Indian Institute

(http://India .org/internship/)

2. CRY

3. United Nations Volunteer

4. NITI Aayog

5. PROGILENCE Capability Private LTD.

6. Internship at PRS

7. Lok Sabha Internship Program

8. ECONOMICS

1. Students are supposed to conduct an original research work and prepare an individual power

point presentation for any one of the topics listed below:

Demonetisation

Goods and Service tax(GST)

Foreign Direct Investment

Make in India

RBI- Functions and policies

2. Conduct a survey on Demographic structure in your neighbourhood to have the knowledge

of various demographic characteristics:-

Sex ratio, Density of population, occupational structure, average income of the household,

per capita income, Total population.

For this they have to conduct a research on 10 households. It should cover:-

1.Acknowledgement

2.Introduction

3.Obective

4.Collection of data

5.Classification and organisation of data

6.Presentation of data

7.Analysis of data

8.Interpretetion of data

1

DELHI PUBLIC SCHOOL GHAZIABAD

HOLIDAY HOMEWORK SESSION 2018-19 CLASS XI

STREAM: -OPTIONAL SUBJECTS

1. INFORMATICS PRACTICES/COMPUTER SCIENCE

Develop any one of the below mentioned project in Python/ java/ HTML

Hangman Game

Calculator

Quiz Application (Multiple choice question) based on unit 1 of Informatics Practices /

Computer Science

Note: The project work should be original. Plagiarism will result in the cancellation of project

Prepare the Project file as directed in the class

2. Banking and Insurance

Banking

1. Revise for the UT 1 Exam Syllabus

2. Complete the Assignment of unit 1 and extra assignment questions provided.

3. Prepare a chart showing the structure, role and functions of RBI in our country.

4. Prepare a collage on the logos of any ten banks, specifying therein the reason behind that logo. Also

mention the value that it implies.

Insurance 1. Explain the story of formation of IRDA in most creative form as per your wish. (like PPT

Presentation, Flow chart showing the milestone, etc). Marks will be allotted for same in Half Yearly

examination.

2. Explain the reason behind LIC for its LOGO. What does it signify?

3. Entrepreneurship

PROJECT 1 :-Case Study

Choose an entrepreneur. The chosen entrepreneur should be easily accessible i.e. local entrepreneurs

to be approached. Prepare a “snapshots” about your role model and details to help you in the process

of conversation. For eg. his/her personal details, his/her business, family etc.

Questionnaire to be used by the student to seek details about the role model. The questionnaire

should include the information:-

Background

Role Model

Experiences

Turning Point

Achievements and Acknowledgements

Changing Times

Future

Self Actualisation

In retrospect

Business Mantra

2

Message to our Youth

PROJECT 2 :- Prepare a Power Point Presentation on the topic :

“Innovation is the weapon of success for an entrepreneur”

PROJECT 3:- You are required to identify categories and works on the possibility of having

different types of money generating activities within the limits of the school.

Options :- Manufacturing – Chocolates, Snacks, Beverages, Potted plants, Beverages

Trading:- Stationery, Beads, Biscuits, Fruit juices, Seasonal and festive related specifics- diyas,

candles, rakhis

Services:- Mehandi Art, T-shirt painting , Running the stationery shop, Sale of second hand

books/novels

4. FINE ARTS- 1. Do lots of sketching of objects and human figures in the quarter size art file.

2. Make two still life studies in pencil on half imperial art sheet.

3. Make one picture composition on the topic of your choice in pencil .

Hands on Experience:

Art on newspaper: Take 2” thick thermocol. Cut it into 8”x8” square. Cover it with the black

and white printed part of newspaper and make the drawing on it with black color (Silhouette

art)

Make a bold Madhubani on A4 sheet. Take only birds, peacock, fish, animals and sun

Make 4 greeting cards or two paintings of Jamini Roy

Instructions for greeting cards-theme- Flowers Size- 8”x6” (half of A4 sheet)

Material- White or coloured A4 sheet, water colours, pastel colours, paper cut outs or any other craft

material

For Painting-Size-A4sheet, light colour

Note- Do not write anything inside the card. Name, class and section should be written at the back of

the card/ painting in pencil. Marks will be awarded for the activities done by the students.

5. BIOTECHNOLOGY A. Prepare a powerpoint presentation on the topic assigned to you in the class

B. Make a project on “Achievements of Biotechnology” in any one of the following fields:

a. Agriculture

b. Food processing

c. Gene therapy / Genetic Engineering

d. Stem cell technology

e. Xenotransplantation

f. Tissue Culture

g. In-vitro fertilization / Test tube baby

h. Culture Technologies

The project should comprise of:

a. Title

b. Certificate

c. Acknowledgement

d. Aim

e. Introduction

3

f. Project details

g. Result

h. Bibliography

1. Prepare an action plan for studying and creating awareness on any local or global health issues like

lifestyle related diseases, e.g. diabetes, obesity, hypertension, heart problems etc. Visit at least 10 homes

and conduct a survey to prepare a report on their lifestyle, eating and sleeping habits, exercise routine etc.

Interpret your data and report the results.

2. Students may attend summer hobby programmes offered by National Science Centre, Pragati

Maidan , New Delhi on various courses in biotechnology. For more information n the same contact

www.nscdelhi.org or contact at education cell on 23371297, 23371893, 23371945.

6. HOME SCIENCE

Recipe Booklet – 10 main dishes

10 Beverages

10 Salads

10 Soups

10 Desserts

Prepare cloth jholas/bags for gifting to five families in the neighbourhood n order to

discourage the use of polythene bags for shopping.

Locate elderly people in the neighbourhood and help them buy weekly groceries.

Prepare a healthy , nutritious and well balanced meal with the help of your parents

and serve it to the orphans in the neighbourhood, write down the recipe and

nutritiona value of the food prepared.

7. LEGAL STUDIES

Revise for UT 1

Complete assignments 1 to 3

In a group of two make a model on one of the following-

1. Hierarchy of courts

2. Kinds of States based on functions.

3. Separation of Powers

Make a poster on any one of the following-

1. Right to equality

2. Clean environment as a Fundamental Right.

3. Right to Education

Make PPTs on

1. Public Interest Litigation

2. Organs of the United Nations.

3. Separation of Powers – Merits and demerits

4

PROJECT- Visit a bank and collect the different types of forms available for deposit,

withdrawal, making the Demand Drafts, opening the new acoount.

Referring to Section 138 of the Negotiable Instruments Act trace the process of filing

a complaint in case of dishonour of cheque.

8. MUSIC

MUSIC HINDUSTANI

1. Make one Homemade Musical Instrument.

2. Write theka of the Taal Keharwa in thah and dugun.

3. paste picture of any Indan Classical Vocalist.

9. PHYSICAL EDUCATION Use a clear file to prepare the project which should have ruled and drawing sheets alternatively. No folder

file would be consider for the submission. The file must contain the following detail Along With Relevant

Pictures in Colour

1. History of the game

2. Lay-out of the court/field/ground

3. Equipment used along with their dimensions

4. Fundamental skills (briefly described and with relevant photographs)

5. Olympic/ World cup/ World Championship records

6. Championships/ trophies etc.

7. Arjuna awardee with brief detail

8. Dronacharya awardee with brief detail

9. Calculation of BMI

10. Administration of AAHPERD Test and Harvard Step Test

VERY IMPORTANT -

PREPARE A MODEL USING WASTE MATERIAL TO SHOW FIELD/COURT ALONG WITH

PLAYERS SHOWING ANY ONE FUNDAMENTAL SKILL.

10. PSYCHOLOGY : Make a project report based on the psychological issue mentioned in the each

film with the name of the problem mentioned and its symptoms.

1. A beautiful mind

2. Rain man

3. Sybil

4. As good as it gets

5. A Clockwork orange

11. SOCIOLOGY . Prepare PPTs on

1. Relation between sociology and other sciences.

5

2. Forms of inequality and examples

3. Converting personal troubles into social issues (Examples)

Projects

Prepare a proper questionnaire related to your topic and do a small survey.

1. Passive Euthanasia.

2. Social media and its impact on teenagers

3. Gender Inequality at work place/ family etc

4. Harassment and Bullying on Social Media

5. Does Social Media Promote Narcissism?

6. Any topic of your choice.

12. GEOGRAPHY: Students are required to prepare an atlas consisting of both physical and political

maps of all the continents which will be further distributed amongst the unprivileged children who

cannot afford to buy it. The maps should include all the basic elements of the maps so that it can be

understood by the children.

13. GEOSPATIAL TECHNOLOGY : As all the Geospatial students are registered in

NCERTBHUWAN and ISRO websites, They need to do the vectorization in the base

maps and satellite imagery of any five Indian cities. Choose any five point, line and

polygon features each in all the five cities. Assign unique id’s of these features and

linked the attribute data with the spatial data. These GIS application should be visible on

the website with your and your school name.

14. FASHION STUDIES- 1. Make two set of fashion accessories made of waste material.

3. Make something usable using old garments/ rags/ wool/ silk thread/ laces/ other trims. Also

teach the same to any underprivileged person in your society.(Any domestic help).

4. Summer Internship of one week (Pearl, IIAD or any other of your field of interest)

15. ECONOMICS

1. Students are supposed to conduct an original research work and prepare an individual power

point presentation for any one of the topics listed below:

Demonetisation

Goods and Service tax(GST)

Foreign Direct Investment

Make in India

RBI- Functions and policies

2. Conduct a survey on Demographic structure in your neighbourhood to have the knowledge

of various demographic characteristics:-

Sex ratio, Density of population, occupational structure, average income of the household,

per capita income, Total population.

6

For this they have to conduct a research on 10 households. It should cover:-

1.Acknowledgement

2.Introduction

3.Obective

4.Collection of data

5.Classification and organisation of data

6.Presentation of data

7.Analysis of data

8.Interpretetion of data

16. NCC – Drill Practice, Map Reading practice, Annual Camp, Revise Unit 1,2,3 &4

1

DELHI PUBLIC SCHOOL GHAZIABAD

HOLIDAY HOMEWORK SESSION 2018-19

CLASS XI

STREAM: -SCIENCE

INTERNSHIP AND COMPULSORY COMMUNITY CONNECT PROGRAMME :

NOTE: As per CBSE guidelines, all the students are required to

constructively use their time during vacation by doing

internship in any organization /chemist shop /retail outlets or

work under doctors, engineers, CA , Advocates for a minimum

period of 15 days or attend summer hobby programmes at

National Science Centre. The students must get experience

certificate clearly mentioning the area of work and days they

interned. Grades will be assigned based on the proof provided

by the student. Proof can be in the form of(work Experience

certificate / letter / photograph etc.)

Community groups, clubs and organisations are an important

part which makes a society a great place to live. Helping people

within the community to connect with groups and

organisations whether it be for the purpose of recreation,

support or services is also really important for an overall

development of individuals. Keeping this in view the students

should associate themselves with any one or multiple

activities as mentioned below—

students may work as an intern with an NGO and associate

themselves with an ngoing project and bring appropriate proof

for the same.

Taking initiative to spread awareness and educating students

belonging to the less privileged section of the society by

offering services in schools for specially abled/ schools run by

NGOs

Provide basic education to the domestic help by giving free

coaching for three hours a week.

Initiate plantation drives in the locality by planting stem root

trees (neem/peepal/banyan/mango/jamun/kalpvriksh etc) in your

neighbourhood with the view of creating a greener environment

for local population.

Educate neighbours on how to divide /segregate biodegradable

garbage from the non biodegradable one

2

Visiting old age homes and spending quality time with the

inmates.

– Educating people on the adverse effects of using plastics. Be a

part of a cleanliness drive and try to influence others to do the

same

You may opt for any one activity or be a part of more than one. You need to maintain a

progress chart and keep pictures of your activities as evidences.

ENGLISH CORE

Read the novel ‘The Kite Runner’ by Khaled Hosseini and on the basis of your reading,

prepare the following:

Power Point Presentation(min 8 slides) (to be mailed to respective subject

teachers)

Project File based on the following points:

Theme

Character Analysis of the main characters

Major Events

Recently, Delhi High Court questioned the rationale behind the amendment to certain

laws. This resulted in amendment in the Prevention of Children from Sexual Offences

(POCSO) Act, 2012.Write a letter to the Editor of the ‘Hindustan Times’ expressing

your concern and suggesting how cities can be made safe for women.

Choose a person from the field of literature that you are most inspired by. Read the

biography/autobiography of the person. On a chart paper-

Paste the picture of the person.

Write a brief character sketch.

Mention one episode from the person’s life and the way it has motivated you.

Mention one thing that the person should not have done/or could have done

differently.

Collect information about your grandparent by interviewing your parents, relatives,

grandparents’ friends etc and write a biography based on their life in about 1000 words.

Also paste pictures validating events from their lives

Please Note the specifications for the English Project stated below

To be done on A-4 Size sheets/ chart paper

To be handwritten in blue and black ink

Pictorial illustrations for the biography

1. MATHEMATICS

Following working Models on hard board with complete research by the group

of six students;

Roll number 1 to 6 ; Octants, Roll number 7to 12; Concepts of sets and subsets,

Roll number 13 to 18; Conic sections in everyday life, Roll number 19 to 24;

Survey of your society for finding mean, median base on any parameter,

3

Roll number 25 to 30; Super hexagon for trignometrical identities, Roll number

31 to 36; Transforming Circles. Rest students will be made on Conic section in

everyday life.

Q.1. Solve:− + > , when

(i) is a real number, (ii) is a natural number

Q.2. Solve the following system of linear inequations + − − + ; − − + − . Q.3. Solve the following systems of inequalities graphically

(i) + , + , + , , . (ii) + , + , + . (iii) − , − − , , . Q.4. Solve the following inequations

(i) 𝑥+5𝑥− > (ii)

5𝑥−𝑥+5 <

Q.5. Solve the following inequations

(i) | + | > (ii) | − | | |

Q.6 .Apples are kept best in cold storage if they are held above freezing, but not at

greater than 50c i.e. 0 < C

0 < 5

0C . What is the corresponding Fahrenheit temperature?

If the conversion formula is given by 𝐶 = 5 𝐹 − .

Q.7. On Republic Day eve a person manufactures shirts with National Flag embedded on

it, the cost and revenue of shirts is given by C(x) = 20 x + 4000 and R(x) = 60 x + 2000

respectively where x is the number of shirts manufactured and sold. How many shirts should

be manufactured and sold to realize profit? Which value system he posses with a mixture of

his business?

Q.8. A milkman has 80% milk in his stock of 800 litres of adulterated milk. How much

100% pure milk is to be added to it so that purity is between 90% and 95%. How much

pure milk should add to his stock to obtain 99% pure milk? What should be done to stop

adulteration in foods? Write your views.

Q.9. A furniture dealer deals in only two items: tables and chairs. He has Rs. 15000 to

invest and a space to store at most 60 pieces. A table costs him Rs. 750 and a chair Rs. 150.

Formulate the data in the form of inequations and draw a graph representing the solution of

these inequations.

Q.10 Find the ratio in which xy plane divides the joining of (2,4,-3) and ( -3,5,4)

Q.11 Find the reflection (image) of the point P(x, y, z) in x y-plane

Q.12 Find the coordinates of the centriod of the triangle whose vertices are (1, 5, 2), (3, 2, 7)

and (-7,-1, 4). {-1,2, }

Q.13 Find the length of the foot of perpendicular from the point P (a, b, c) on z-axis.

{√ + }

Q.14 Using section formula, show that points (-4, 6, 10), (2, 4, 6) and (14, 0, -2) are collinear.

Q.15 Find the lengths of the medians of the triangle ABC with vertices A(0,0,6), B(0,4,0) and

C(6,0,0).

Q.16 Find the equation of the path of P which moves such that PA2 + PB

2= 2K

2, where A and

B are the points (3, 4, 5) and (-1, 3, -7) respectively

4

Q.17 Find the ratio in which the line segment having the end points A (-1,-3,4) and B(4,2,-1)

is divided by the XZ plane. Also find the coordinates of the point of division. Ans:3:2;

(2,0,1)

Q.18 The vertices of a triangle ABC are A(3,2,0) B(5,3,2) and C(-9,6,-3). The bisector AD

of A meets BC at D. Find coordinates of D.

Q.19 Find the value of so that so that the distance between the points (7,1, -3) and (4,5, )

is 13 units.

3. PHYSICS

A

1. Show the angular momentum has the same physical units as those of Planck’s

constant. Planck’s constant is given by the relation E = hv, where the letters have

their usual meanings.

2. Given that the unit of energy is one million erg, the unit of force is 1000 dyne and

the unit of time is 100 sec, calculate the units of mass and length.

3. If the velocity of light be represented by unity and 100s be the unit of time, what

must be the unit of length?

4. What is the unit of pressure if the unit of mass is the kg, the unit of length is meter

and the unit of time is minute?

5. If the unit of length and force be each increased four times, show that the unit of

energy is increased sixteen times.

6. Find the unit of length, mass and time, if the unit of force, velocity and energy are

100dyne, 10 cm s-1

and 500 ergs respectively.

7. The velocity of sound V is gaseous medium depends upon the pressure P and the

density of the medium. Test by the method of dimensions whether the relation,

PV

is correct. Given = ratio of the two specific heats of the gas.

8. Check the accuracy of the following relation, using the principle of homogeneity of

dimension: (i) 2 cos

r gh

T

(ii) 3

4

g

GR

where symbols have their usual

meanings.

9. A flywheel of moment inertia I is set into rotation by the descent of a mass m. If is

the angular velocity of the mass when it has descended through a distance h, we

have, from the law of conservation of energy, the equation,2 21 1

2 2mgh mv I

Show by your knowledge of dimensions that this equation is correct.

10. The viscosity of a gas is determine by its density, its average molecular velocity C

and its mean free path m. Show that = kC.

11. Each side of a cube is measured to be 7.203m. What are the total surface area and

the volume of the cube to appropriate significant figures?

12. Specific resistance of thin circular wire of radius r cm, resistance R ohm and length

l cm is given by

2r R

l

If r = (0.26 0.02) cm, R = (32 1) ohm and l = (78

0.01) cm, find the percentage error in .

13. The period of oscillation of a simple pendulum is T = 2l

g L is about 10 cm and is

known to 1 mm accuracy. The period of oscillation is about 0.5 s. The time of 100

5

oscillations is measured with a wristwatch of 1 s resolution. What is the accuracy in

the determine of g?

14. The length, breadth and thickness of a lock of wood were measured with the help of

a meter stick. The result after calculating the error are as given: l = (15.12 0.01)

cm, b = (10.15 0.01) cm and h = (5.28 0.01) cm. Find the percentage error in the

volume of the block.

15. If the velocity of light c, gravitational constant G and Planck’s constant h be chosen

as fundamental units, find the value of a gram, a centimeter and a second in terms

of new units of mass, length and time respectively. Given, c = 3 x 1010

cm s-1

, G =

6.67 x 10-11

dyne cm2

g-2

and h = 6.6 x 10-27

erg s.

16. Test by the method of dimension, the accuracy of the relation t = 2

2 2

lg

k l for

the time period of a compound pendulum.

17. Show by the method of dimensions, prove that the relation,

4

2

p rc

l

for the

couple per unit twist of a wire of length l, radius r and co-efficient of rigidity , is a

correct one.

18. An apprentice engineer found that the volume V of water which passes any point of

a canal during t sec is connected with the cross section of the canal and the

velocity u of the water by the relation V = k u. t. Test by the method of dimensions

if the relation is correct.

19. The time oscillation of a small drop of liquid under surface tension depends upon

the density , radius and the surface tension S. From a knowledge of dimensions

prove that the period of oscillation t3

S

20. Assuming that the mass m of the largest stone that can be moved by a flowing river

depends only on V the velocity, the density of water and g, show that m varies

with the sixth power of the velocity of flow.

21. The period oscillation of a simple pendulum in an experiment is recorded as 2.63 s,

2.56 s, 2.42 s, 2.71 s and 2.80 s respectively. Find the time period, the absolute error

in each observation and the percentage error.

22. Two resistance, R1 = (100 3) ohm and R2 = (200 4) ohm are connected in series.

What is the equivalent resistance?

23. The resistance, V

RI

, where V = (100 5) V and I = (10 0.2) A. What is the total

error in R?

24. An experiment to determine the specific resistance of a metal wire yielded the

following measurements: Resistance, R= (64 2) ohm, Length, l = (156.0 0.1) cm,

Radius, r = (0.26 0.02) cm If s is expressed as

2r R

l

Find the percentage error

in .

25. The refractive index of water as measured by the relation, realdepth

apparentdepth was

found to have the value 1.29, 1.33, 1.34, 1.35, 1.32, 1.36, 1.30, 1.33.Find the mean

value of , the mean value of the absolute error, the relative error and the

percentage error?

26. A force of (3064 5) N is acting over an area of (0.23 0.02) m2. What is the

pressure exerted?

27. Assuming that the volume of a liquid flowing per second through a cylindrical tube

depends upon (a) the pressure gradient, (b) the radius of the tube and (c) the

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coefficient Of viscosity of the liquid, find by the method of dimensions, how it

depends on these three quantities.

The velocity v of water waves depends on their wavelength , density of water and

acceleration due to gravity g. Deduce by the method of dimensions the relation between

these quantities.

B.WORKING MODEL LIST PHYSICS

Students kindly make one working model as topic given below:

Projectile motion

Circular motion

Newton’s law of motion

Conservation of energy

Conservation of mass

Spring

Rotational motion

Angular momentum, moment of inertia and torque

Elasticity of a material

Hydrostatics and pascal law

Fluid dynamics

Oscillatory motion

Simple harmonic motion

Wave motion

C. SUMMER CAMP/PROGRAMME OFFERED BY NATIONAL SCIENCE CENTRE Students may attend summer Hobby camps offered by NSC , Pragati Maidan , New Delhi . the

information regarding the courses may be attained by visiting their website www.nscdelhi.org or

contact education cell on 23371297, 23371893, 23371945.

the courses offered are call up

Scientific Toy Making on scientific principles covering topics of sound,

optics, mechanics, electricity etc. This makes scientific learning enjoyable and promotes

thought process to explore newer ideas.

Biotechnology

The course aims to help students to take a closer look at biotechnology through exciting

experimental activities. It is expected that the activities will familiarize them about the basic

techniques and handling of biotech equipment used to identify, isolate, processing and

detection of microorganisms, DNA, proteins, enzymes etc. These experiments are based on

hands-on activities in Biotechnology so that they can understand fully the principles

involved.

Robotics

It is a hobby camp covering LEGO robotics and coding activities. It will provide clear step-

by-step instructions on how to build several unique robots, as well as extensive programming

guidance, from the very basics of block programming through data wiring. The students will

learn application of Robots, basic of movement, controlling of direction etc. The students will

also do PCB assembly of robot, programming on computer and fusing program on

microcontroller chip.

4. CHEMISTRY

Working model presentation on the given topics (any one) with synopsis in chart paper and slides

1) Creative and alternative ideas for energy conservation

2) Air purifier

3) Water purifier

4) Waste management

5) Recycling of natural resources

6) Alternative sources of renewable energy

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7) Pollution index measuring devices

8) Edible crockery

9) Soil pollution control

10) Environmental friendly Thermoregulatory system

11) Biodegradable useful articles.

5. BIOLOGY

A) Prepare a power point presentation on the topic assigned to you in the class.

B) Make a project on any one of the following topics:

a. Plant diversity

b. Animal diversity

c. Heart diseases

d. Respiratory disorders

e. Environmental issues

f. Autoimmune diseases

g. Health and medicine

h. Skin grafting and plastic surgery

i. Arthritis and knee transplantation

j. Cancer detection and treatment

k. Disorders of nervous system

The project should comprise of:

a. Title

b. Certificate

c. Acknowledgement

d. Aim

e. Introduction

f. Project details

g. Result

h. Bibliography

a. Think of the issues we need to address like recreating a community garden, creating an

open and shared learning space for underprivileged children, designing a course for them,

tree plantation drive or home composting to reduce biodegradable waste, creating

awareness about segregation and minimization of waste, reducing use of polybags, best out

of waste, you choose and name your project!

b. Visit at least 5 homes and talk with them, communicate what you hope and wish for your

society and encourage them to ask for mentoring and support.

c. Share your dreams for enhanced community-school partnerships, ask people what matters

to them, ask them how they might help, and show them your passion. Invite them to

collaborate and share their experience, skills and time to make a difference.

d. Think of the community resources that are available, the time that can be invested in

projects.

e. Showcase your work online social media ( official classfacebook page and official twitter

account )for all to benefit from.

8. ECONOMICS

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1. Students are supposed to conduct an original research work and prepare an

individual power point presentation for any one of the topics listed below:

Demonetisation

Goods and Service tax(GST)

Foreign Direct Investment

Make in India

RBI- Functions and policies

2. Conduct a survey on Demographic structure in your neighbourhood to have

the knowledge of various demographic characteristics:-

Sex ratio, Density of population, Occupational structure, Average income of

the household, Per Capita Income, Total population.

For this they have to conduct a research on 10 households. It should cover:-

1.Acknowledgement

2.Introduction

3.Obective

4.Collection of data

5.Classification and organisation of data

6.Presentation of data

7.Analysis of data

8.Interpretetion of data