Question # 1

the wavelength of transverse wave travelling with a speed 'v' having frequency 'f' in equal to

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f/v

Vf

V/f

f/V2

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 distance between the consecutive nodes is

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If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is.

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1m

2 m

3 m

4 m

The speed of sound in air would become double than ots speed at 10^oC at a temperature of.

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313 ^oC

586 ^oC

859^oC

899 ^oC

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

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

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

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

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

The waves used in radar speed trap are

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Longitudinal

Sound wave

Micro waves

Matter waves

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

If the wave motion is 0.01 sec and wave speed is 100 ms-1 then frequency of wave is.

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0.5 Hz

1 Hz

10 Hz

100 Hz

The speed of sound in air does not depend upon

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Temperature

Pressure

Density

Medium

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

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Maximum

Infinite

Zero

Varible

In transverse waves the particles of medium vibrate

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Along the direction of wave

Opposite to direction of wave

Perpendicular to direction of wave

Slowly

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

If 332 waves pass through a medium in 1 second with speed of 332 ms-1 then wavelength will be

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7 m

332 m

664 m

1 m

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