Physics questions and answers

Physics Questions and Answers

If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.

3,306.

The diagram above illustrates a variation of the displacement y of a wave particle with time t. lf the velocity of wave is 250ms-1, calculate the distance between two successive particles which are in phase

A.

20m

B.

2.5m

C.

3.0m

D.

5.0m

E.

50.0m

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

3,307.

The speed of sound in air is 330ms-1. How far from the centre of a storm is an observer who hears a thunder clap 2s after the lightning flash? (Neglect the time taken by light to travel to the observer)

A.

1320m

B.

660m

C.

600m

D.

330m

E.

165m

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

3,308.

A sound wave of velocity 350 ms-1 is directed towards the surface of water. lf the ratio of the wavelength of sound in water to that in air is 425:100, calculate the velocity on the wave in water

A.

82.4ms-1

B.

148.8ms-1

C.

350.0ms-1

D.

1487.5ms-1

E.

3500.5ms-1.

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

3,309.

The distance between two successive crests of a water is 1m. lf a particle on the surface of the water makes two complete vertical oscillations in 1 second, calculate the speed of the wave

A.

0.5 ms-1

B.

1.0 ms-1

C.

2.0 ms-1

D.

3.0 ms-1

E.

4.0 ms-1

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

3,310.

A string of length 1.0 m vibrates in 10 loops. If the total mass of the string is 1.0 x 10-3 kg and the tension in it is 10N, calculate the frequency of the vibration.

A.

50Hz

B.

100Hz

C.

250Hz

D.

400Hz

E.

500Hz

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.


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