question – physics form – 4 - schools net kenya · question – physics form – 4 compiled and...

QUESTION – PHYSICS

FORM – 4

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CIRCULAR MOTION

ELECTROMAGNETIC WAVES

Describe two changes that take place to the waves as they pass into the glass.

ELECTROMAGNETIC INDUCTION

(ii) Explain why the paper cone moves when a current passes in the coil.

(b) An alternating current passes in the coil.Describe the movement of the paper cone.

(c)The loudspeaker is used to produce a sound that has a frequency of 800 Hz.The wavelength of the sound as it leaves the loudspeaker is 0.40 m.Calculate the speed of the sound in air.

(v) Calculate the electrical energy supplied to the lamp in 30 minutes.

PHOTOELECTRIC EFFECT

Stopping potential = .....................................................…

question – physics form – 4 - schools net kenya · question – physics form – 4 compiled and...

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