Question # 1

The time required to complete on vibration is called

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frequency

total time

time period

velocity

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

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45°

90°

135°

180°

The natural frequency of a pendulum which is vibrating freely, depends upon its

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mass

length

material

all 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

In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is

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Same

2 times

4 times

8 times

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

The damping depends upon the

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amplitude

sharpness

both of them

none of them

Acceleration of the mass at any instant is given by

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a=k/m x

a= - m/k x

a = - k/m x

a=m/k x

The wave form of S.H.M will be

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square wave

sine wave

rectified wave

saw-tooth wave

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

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frequency of S.H.M

period of S.H.M

wave form

none of them

Example of progressive wave is

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transverse waves

longitudinal waves

both of them

none of them

Which one of the following is an example of resonance

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swing

tuning a radio

microwave oven

all of them

Which waves are used in sonography?

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Microwaves

Infra red waved

Sound waves

Ultrasonic waves

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

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

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Interference

Diffraction

Polarization

Refraction

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

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Interference

Refraction

Polarization

Reflection

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