Question # 1

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

The distance between two consecutive crest is called.

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Displacement

Amplitude

Wave front

Wavelength

Stars moving away from Earth show a

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Green shift

Blue shift

Red shift

Yellow shift

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

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Nodes

Antinodes

Crest

Trough

The process followed by Newton for the determination of speed of sound in air is

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Adiabatic

Isothermal

Isobaric

Isochoric

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 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

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 particle velocity at nodes is

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Minimum

Maximum

Zero

Constant

When the amplitude of a wave become double, its energy becomes

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One half

Two times

Three times

Four times

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

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Maximum

Infinite

Zero

Varible

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

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 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

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

Speed of sound in vacuum is

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280 ms-1

332 ms-1

333 ms-1

Zero ms-1

The mechanism of transports energy of all the waves is

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Different

Same

Complicated

Easy

Waves transport energy without transporting

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Matter

Force

Momentum

All of these

Frequency range of hearing of cats is.

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20-20000 Hz

10- 10000 Hz

60-20000 Hz

60-70000 Hz

Sound travel faster in

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CO2

H2

O2

He

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

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

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

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