Question # 1

Such oscillations in which the amplitude decreases steadily with time, are called

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resonance

force oscillations

large oscillations

damped oscillations

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

The wave form of S.H.M will be

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square wave

sine wave

rectified wave

saw-tooth wave

When a wave is travels from one place to another, it transfers:

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Matter

Energy

Momentum

Both B and C

In compressional wave,the layer of medium having reduced pressure is called:

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Compression

Elasticity

Node

Rarefaction

The restoring force always directed towards the

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extreme position

mean position

both of them

none of them

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 expression for restoring force is

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F=ma

F=kx

F= -kx

Kx=ma

The maximum displacement of a body on either side of its equilibrium position is called

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frequency

amplitude

displacement

time period

Sound waves in air always

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Longitudinal

Transverse

Stationary

Electromagnetic

Mechanical waves on the surface of a liquid are

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Transverse

Longitudinal

Torsional

both transverse and longitudinal

The time required to complete on vibration is called

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frequency

total time

time period

velocity

The distance covered by the wave during one period is called its:

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Wave number

Frequency

Wavelength

Time period

The phase determines the

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displacement

amplitude

frequency

state of motion of vibrating body

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

The waves produced in a microwave oven have frequency

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2450 Hz

2450 K Hz

2450 M Hz

2450 G Hz

SI unit of wave length is:

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Kilometer

Metre

Centimetre

Hertz

When a body is performing S.H.M., its acceleration is

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inversely proportional to the displacement

directly proportional to the applied force

directly proportional to the amplitude

directly proportional to the displacement but in opposite direction

The instantaneous velocity of a body moving along a circle is directed

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along the radius

along the tangent

away from the circle

none of them

If a wave can be polarized, it must be

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An electromagnetic wave

A longitudinal wave

A progressive wave

A transverse wave

If we increase the length of a simple pendulum four times, its time period will become

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2 times

3 times

4 times

6 times

When the bob of simple pendulum is at extreme position, its K.E. will be

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maximum

minimum

zero

all of them

The expression of Hook's law is

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F=ma

F=kx

F= -kx

-kx=ma

The vibrations of factory floor caused by the running of heavy machinery is an example of

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free vibration

natural vibrations

forced vibrations

all of them

Which type of wave can be set up in solids

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longitudinal waves

transverse waves

both of them

none of them

If the mass of the simple pendulum becomes double, its time period

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increase

decreases

remains constant

none of them

A swing has

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one natural frequency

two natural frequencies

three natural frequencies

four natural frequencies

A weakly damped system has fairly

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sharp resonance curve

flat resonance curve

both of them

none of them

The total energy of spring mass system is

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zero

changing with time

constant

none of them

The waves which propagate through the oscillations of material particles are known as:

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Mechanical waves

Electromagnetic waves

Any of them

None of them

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

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Interference

Refraction

Polarization

Reflection

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