Question # 1

Velocity of sound is independent of

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Temperature

Density

Pressure

Medium

The speed of sound in ari at 0 ^oC is 332 ms-1, Then the speed at 40 ^oC will be

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372 ms-1

356 ms-1

346 ms-1

332 ms-1

Two tunign forks of frequencies 260 Hz and 256 Hz are sounded together , the number of beats per second is.

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2

258

516

4

The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is.

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4 l

2l

l

1/4 l

Radar system is an application of.

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Chemical effect

Electric effect

Magnetic effect

Doppler's effect

Half wavelength corresponds to

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0 ^o

90 ^o

180 ^o

360 ^o

Which of the following is mechanical wave

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Heat

Light

Sound

None of these

The portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

When sound waves enter in different medium, the quantity that remains unchanged is.

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Intensity

Speed

Frequency

Wave length

Increase in the velocity of sound in air for 1 ^oC rise in temperature is.

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61 ms-1

0.61 ms-1

161 ms-1

261 ms-1

Speed of sound in vacuum is

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280 ms-1

332 ms-1

333 ms-1

Zero ms-1

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

the velocity of sound at 0 ^oC is 332 ms-1, the velocity of sound at 10 ^oC will be

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337.1 ms-1

338.1 ,ms-1

342.1 ms-1

328.1 ms-1

The experimental value for the velocity of sound in air is

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233 m-sec^-1

333 m-sec^-1

433 m-sec^-1

533 m-sec^-1

The speed of sound increases with the increase of in

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Pressure

Volume

Temperature

Density

Who did give the correct formula for the speed of sound in air?

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Boyle

Laplace

Newton

Einstein

10 waves pass through a point in 2 seconds with speed 10 ms-1 the frequency of wave will be

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1 Hz

2 Hz

5 Hz

10 Hz

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Physics ICS Part 1 Chapter 8 Online Test MCQs With Answers

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