Question # 1

Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

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Interference

Diffraction

Polarization

Refraction

Transverse waves can be set up:

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Solids

Liquids

Gases

All of them

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

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Has a definite pitch

Has a definite quality

Has a definite capacity

Can penetrate the wall

A traveling wave has a shape of:

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Square wave

Sine wave

Parabola

hyperbola

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

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Rope

Coil of spring

Water

All of them

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

The portion of the water above its mean level forms a:

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Crest

Trough

Both A and B

None of these

The force which opposes the applied force producing the displacement in the spring is called

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restoring force

periodic force

centripetal force

resistive force

Energy is not carried by

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Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

In stationary waves

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Energy is uniformly distributed

Energy is minimum at nodes and maximum at antinodes

Energy is maximum at nodes and minimum at antidotes

Alternating maximum and minimum energy producing at nodes and antinodes

The restoring force always directed towards the

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extreme position

mean position

both of them

none of them

The waves which propagate by the collision of material particles are known as

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e.m. waves

mechanical waves

light waves

microwaves

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

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330

1000

156

0

Which one of the following elasticizes is possessed by fluids:

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Young's elastic modulus (length)

Bulk elastic modulus (volume)

Modulus of rigidity (shape)

None of these

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

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1 : 2

4 : 1

1 : 4

2 : 1

Laplace formula is derived from

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Isothermal change

Adiabatic change

Isobaric change

None of these

The wave form of S.H.M will be

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square wave

sine wave

rectified wave

saw-tooth wave

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ECAT Physics Chapter 8 Waves Online Test MCQs With Answers

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