Question # 1

For transmission of both transverse and longitudinal waves, we can use:

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Solid

Gas

Plasma

None of these

Shock absorber of the car is an example of

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resonance

forced oscillations

interference

damped oscillations

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

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Mechanical waves

Electromagnetic waves

Matter waves

All of them

When a body moves to and fro motion, this type of motion is called

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translatory motion

circular motion

oscillatory motion

all of them

Example of progressive wave is

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transverse waves

longitudinal waves

both of them

none of them

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

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

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

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

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100 ms^-1

200 ms^-1

450 ms^-1

900 ms^-1

Smaller the damping, the resonance will be

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more flat

more sharp

both of them

none of them

Which waves are used in sonography?

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Microwaves

Infra red waved

Sound waves

Ultrasonic waves

The velocity of sound is greatest in

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Water

Air

Vacuum

Metal

In solids, only following type/s of wave can travel:

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Transverse

Longitudinal

Both A and B

None of them

A traveling wave has a shape of:

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Square wave

Sine wave

Parabola

hyperbola

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

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