Question # 1

Fidelity refers to

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Reproduction of original sound

Reproduction of original image

Reproduction of music

Reproduction of a CD from original copy

transverse wave motion is possible in:

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Air

A mixture of NH₃and O₂

Strings

All of these

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

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P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

The restoring force always directed towards the

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extreme position

mean position

both of them

none of them

There is no net transfer of energy by particle of medium in

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Longitudinal wave

Transverse wave

Progressive wave

Stationary wave

When a wave is travels from one place to another, it transfers:

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Matter

Energy

Momentum

Both B and C

The maximum displacement of a body on either side of its equilibrium position is called

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frequency

amplitude

displacement

time period

Si units of time period is

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second

hertz

revolution

vibration/sec

Longitudinal waves are also called:

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Congressional waves

Transverse waves

Radio waves

None of them

Velocity of sound in vacuum (in m/s) is

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330

1000

156

0

Time period of a simple pendulum depends upon the

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length of the pendulum

acceleration due to gravity

none of them

both of them

When temperature increase, the frequency of a tuning fork

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Increases

Decreases

Remains same

Increase or decreases depending on the material

Decibel is unit of

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Intensity of light

x-ray radiation capacity

sound loudness

Energy of radiation

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

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maximum

zero

half of the maximum value

one third of the maximum value

SI unit of frequency is

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second

hertz

revolution

vibrations/sec

The velocity of sound in air depends upon

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Density and elasticity of gas

Pressure

Wavelength

Amplitude and frequency of sound

A simple pendulum consists of a

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small light bob

small heavy bob

big light bob

big heavy bob

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