paper 1 final raw source & ms

8/17/2019 Paper 1 Final Raw Source & Ms

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1 Diagram 26 shows a simple transformer. The bulb does not light up.

Which step will cause the bulb to light up?A Increase the number of turns of the secondary coil

Decrease the number of turns of the primary coil

! "eplace the 6 # battery with a $ # battery

D "eplace the 6 # battery with a 6 # alternating current supply

2 Diagram 2% shows part of the &ational 'rid &etwor(.

What is the magnitude of the )oltage and the type of current in the transmission cables?

* A radioacti)e sample has an initial acti)ity of 1+,, counts per minute. After -+ daysthe acti)ity is 1%- counts per minute.

What is the half life of the radioacti)e sample?

A $ days

1/ days! 2% days

D *6 days

+ Diagram *1 shows three possible radioacti)e decays 0 and " on a graph of nucleon

number A against proton number .


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Which decay emits a beta particle?

A 0

! " D 0 3

- The following e4uation is for a nuclear fusion.

What is 5?

A 0roton &eutron

! eta particle

D Alpha particle

6 In a nuclear reactor moderator is used to

A absorb slow neutrons

slow down the fast neutrons

! dri)e the steam turbine to generate electricity

D absorb radioacti)e emissions from the core of the reactor

% Diagram 2$ shows an arrangement to determine the types of radioacti)e rays emitted byradioacti)e source.

The result obtained as below


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As the conclusion this radioacti)e source emits

A 7 particles only

8 particles only

! 7 particles and 9 raysD 7 particles 8 particles and 9 rays

/ Diagram *, shows the decay cur)e of a radioacti)e sample.

What is the acti)ity of the radioacti)e sample after 1, days?

A /,, counts per minute

+,, counts per minute! 2-, counts per minute

D 12- counts per minute

$ Which of the following is &:T the direction of 7;particles approach )ery close to

the nucleus of an atom?

1, Three nuclei 5 < and ha)e proton numbers and nucleon numbers as shown in the

table below.


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Which nuclei are isotopes of the same element?

A 5 and < only 5 and only

! < and only

D 5 < and

11 A nuclide2*2$2# decays to nuclide22,

$,W and emits alpha;particles and beta;particles. =ow many alpha and beta particles are produced?

A + 7 and * 8

* 7 and + 8

! + 7 and + 8

D * 7 and * 8

12 Diagram shows a transformer.

What will happen to > if the switch is : and :& for e)ery 2 seconds ?

A > will light up only if switch @ is :

> will light up if switch @ is :&! > will light up for a while when switch @ is :& and :

D > will light up all the times when switch @ is :&

1* Diagram shows a simple electrical transmission.

Which of the statement is true ?A Transformers 5 and < are the same type.

Alternating current is used in cables A and

! Input and output )oltages for transformer < are the sameD !urrent flows in cable A are e4ual to the current flows in cable

1+ Diagram 2$ shows the emission of alpha beta and gamma ray in a strong magnetic field.


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What are the radiations of 5 < and ?

1- A radioacti)e isotope has a half;life of 2 minutes. What can be deduced from

the statement?

A After 2 minutes of the isotope remains. After 2 minutes B of the isotope remains.

! After + minutes of the isotope remains.

D After + minutes B of the isotope remains.

16 Which of the following is a fussion reaction?

1% Which of the following is correct about the penetrating power of 7 8 and 9 .


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1/ The number of turns between each pair of output terminals of a transformer is shown in

the diagram 2-. Which of the following 2 terminals produced the output )oltage 12#.

A 0 and B and " C " and @D 0 and "

19 A transformer is /,C efficient with the primary )oltage of 2+, # and the secondary

)oltage of 12 #. If the current in the secondary circuit is + A calculate the current in the

primary circuit.

A 6.-, AB -.-, AC 1.,, AD ,.2- A

2, A radioacti)e source emits radiation that can pass through a sheet of paper but notthrough thic( aluminium.


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What type of radiation is emitted?

A 7 - particlesB 8 - particlesC 9 - particlesD 5;rays

21 Which of the following statements is a characteristic of gamma radiation?

A It has a positi)e chargeB It is an electromagnetism wa)e

C It has a higher ioniing power than alphaD It has a lower penetrating power than beta

22 A pupil in)estigates the penetrating power of radiation from a radioacti)e source.

The table shows her results.

The source emits

A alpha and beta;particles.B beta;particles and gamma;rays.


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C beta;particles only.D gamma;rays only.

23 The e4uation shows the decay of the nuclide 5.

What are the )alues of 0 and ?

26 The diagram shows part of an a.c. generator when its coil is in a horiontal position.

The graph shows the )oltage output plotted against time.

Which point on the graph shows when the coil is in a )ertical position?

2% A long fleEible wire is wrapped round two wooden pegs. A large current is passed in the direction shown.

Which two pairs of lengths of wire attract each other?


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2/ Which action will most increase a personFs eEposure to radioacti)ity?

A eating food that has been sterilised by eEposure to gamma raysB going for a flight in a high;flying aircraftC opening the windows of a houseD using a 'eiger;GHller tube and counter

[7] B

29 A radioacti)e source is placed * cm from a 'eiger;GHller tube in air. The a)erage count rate is

%+2 counts minute.

Then in three eEperiments measurements are ta(en with sheets of different materials placed

between the source and the tube. The results are recorded in the table.

Which types of radiation does the source emit?A alpha and beta onlyB alpha and gamma onlyC beta and gamma only

D alpha beta and gamma[24] B

30 A student in)estigates the emission from an un(nown radioacti)e source. The source is 1, cm in

front of a detector. A strong magnetic field between the source and the detector is then switched

on.

The results are shown.


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Which radioacti)e source produced these results?

[26] C

31 The diagram shows one type of radiation passing between the poles of a strong magnet and

being detected.

Which type of radiation is being detected?A alpha;particles onlyB beta;particles onlyC gamma;rays onlyD alpha;particles and beta;particles

[31] B

32 An eEperimenter sets up the following apparatus in air to disco)er whether a radioacti)e source

is emitting alpha;particles.

The eEperimenter mo)es the paper between the source and the detector. There is no difference

in the count;rate. Why is this?A 0aper does not absorb alpha;particles.B The count;rate due to the bac(ground radiation is too high.


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C The radioacti)e source is too far from the detector.D The source emits beta;particles and alpha;particles.

[32] C

33(10) What is the purpose of carbon brushes in the d.c. motor?

A To ensure good contacts between the stationary components and the mo)ing components.

To allow the coil to rotate continuously

! To ensure the current flowing through the coil is direct current.D To pre)ent the wires from entangling.

Unit-20 page-148

34(14) In the diagram below. what are the directions of the electromagnetic forces acting on wire 5 and wire


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Which combination will achie)e the direction of rotation shown in the diagram?

Unit-20 page-150

37(18) A conducting rod mo)es perpendicularly across the gap between two magnets as shown below.

What is the direction of the induce current in the rod?

Unit-21 page-154

38(19) A conducting rod and an insulating rod Jboth aEes go into the paperK are being dropped between two

magnets as shown below. Which of the following are true?

1 The induced current in the conducting rod flows out of the paper.

2 The conducting rod ta(es a longer time to pass through the magnetic field than the

insulating rod.* The conducting rod will be attracted to the magnets.

A 1and 2only l and *only

! 2 and *only D 12 and *Unit-21 page-154


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*$J2/K What is the power loss when 1,(W at 2,,# is supplied through a cable of total resistance 2Ω?

A 1,,W 2,,,W ! -,,,W D 2,,,,W

Unit-21 page-155

40(18) The iag!a" #e$%& 'h%&' a 'i"p$e "%t%!

=ow can the direction of rotation be re)ersed?

Unit-21 page-149

paper 1 final raw source & ms

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