Question # 1

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

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60°

90°

120°

180°

Angular frequency 'w' is basically a characteristics of

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linear motion

circular motion

both of them

none of them

The wave motion set up in any medium depends upon:

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Elasticity

Inertia

Density

All of these

Which one is not produced by sound waves in air?

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Polarization

Diffraction

Refraction

Reflection

Crests and troughs are formed in:

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Longitudinal waves

Transverse waves

Both of these

None of these

A wave, which transfer energy by moving away from the source of disturbance is called a

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progressive wave

travelling wave

both of them

none of them

The velocity of sound in air not effected by changes in

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Moisture contents in air

Temperature of air

The atmosphere pressure

The composition of air

Smaller the damping, the resonance will be

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more flat

more sharp

both of them

none of them

Which of the following is not mechanical wave?

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Sound wave

Light wave

wave produced in spring

None of them

The characteristic of a body executing S.H.M is that its acceleration is

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inversely proportional to displacement

directly proportional to displacement

independent of displacement

equal to zero

transverse wave motion is possible in:

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Air

A mixture of NH₃and O₂

Strings

All of these

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

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

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maximum

zero

half of the maximum value

one third of the maximum value

In the same medium, velocity of the wave:

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Goes on increasing

Remains constant

Goes on decreasing

None of these

Which one of the following wave motions is transverse:

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Wave motion produced in water when a piece of stone is thrown into it

Pulling of weight hanging vertically with a spiral spring

Both of these

None of these

Which one of the following is an example of resonance

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swing

tuning a radio

microwave oven

all of them

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ECAT Physics Chapter 8 Waves Online Test MCQs With Answers

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