Question # 1

Through which character we can distinguish the light waves from sound waves

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Interference

Refraction

Polarization

Reflection

The velocity of sound at same temperature is maximum in

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H₂

N₂

O₂

NH₃

In transverse waves, the individual particles of the medium move:

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In circles

Perpendicular to the direction of level

Parallel to the direction of level

None of these

Which of the following is an example of a S.H.M?

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motion of a projectile

motion of a train along a circular path

motion of swing

electrons revolving sound the nucleus

The expression for restoring force is

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F=ma

F=kx

F= -kx

Kx=ma

The loudness and pitch of a sound note depends on

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Intensity and velocity

Frequency and velocity

Intensity and frequency

Frequency and number of harmonic

The square of 0.4 is:

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Greater than 0.4

Smaller than 0.4

Equal to 0.4

None of them

A simple pendulum consists of a

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small light bob

small heavy bob

big light bob

big heavy bob

In the same medium, velocity of the wave:

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Goes on increasing

Remains constant

Goes on decreasing

None of these

The expression of Hook's law is

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F=ma

F=kx

F= -kx

-kx=ma

The number of vibrating body at any instant from its equilibrium position is called

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displacement

frequency

amplitude

time period

Transverse waves can be set up:

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Solids

Liquids

Gases

All of them

The distance covered by the wave in one second is:

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Wave number

Wave length

Frequency

Wave speed

When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be

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W=Kx_o

W=1/2Kx_o

W=1/2Kx²_o

W=4Kx_o

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

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

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remains the same

decreases

increases

none of them

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ECAT Physics Chapter 8 Waves Online Test MCQs With Answers

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