Question # 1

The distance covered by wave in 1 sec is

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wavelength

Wave number

Wave speed

Frequency

In which medium the speed of sound is greater.

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Oxygen

Air

Water

copper

On loading the prong of a tuning fork with wax, the frequency of sound.

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Increases

Decreases

Remains same

First increases then decrease

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The error in speed of sound calculated by Newton at STP is about.

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0 %

14 %

15 %

16 %

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 distance between the consecutive nodes is

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A stretched string 2 m long and it has 2 hopes of stationary waves hen the wavelength is

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4 m

2 m

3 m

1 m

The pitch of sound deepens upon

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Intensity of sound

Loudness of sound

Wavelength of sound

Frequency of sound

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 profile of periodic waves generated by a source executing S.H.M is represented by a.

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Circle

Sine curve

Tangent curve

Cosine curve

If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is.

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200 m

2 m

1 m

0.5 m

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

The mechanism of transports energy of all the waves is

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Different

Same

Complicated

Easy

the velocity of sound is maximum at 20 ^oC in

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Lead

Copper

Glass

Iron

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

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

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

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