Question # 1

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

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

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

The distance between two consecutive crest is called.

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Displacement

Amplitude

Wave front

Wavelength

In stationary waves, the velocity of particle at the node is.

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Maximum

Infinite

Zero

Varible

Teh speed of sound in air is 340 m/s. If the pressure of air is doubled then the speed becomes.

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Double

Half

Four times

Remains same

The pitch of sound deepens upon

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Intensity of sound

Loudness of sound

Wavelength of sound

Frequency of sound

If the pressure of a gas is doubled, then speed of sound is.

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Doubled

Become half

Not affected

Increases by four times

Wavelength of a wave for closed pipe having length 'l' in the fundamental mode is.

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2 l

1/2

4 l

l

The speed of sound increases with the increase of in

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Pressure

Volume

Temperature

Density

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 in air does not depend upon

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Temperature

Pressure

Density

Medium

Increase in speed of sound for 1 ^oC rise in temperature is.

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0.61 ms-1

0.61 cms-1

61 ms-1

6.1 ms-1

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

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

Frequency range of hearing of cats is.

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20-20000 Hz

10- 10000 Hz

60-20000 Hz

60-70000 Hz

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

Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is.

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Zero

2

3

4

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