Question # 1

One complete round trip of a vibrating body is called.

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Frequency

Time period

Vibration

Amplitude

Frequency 'f' and time period 'T' are related as

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The frequency of waves produced in microwave oven is

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1435 Hz

2450 MHz

1860 MHz

2850 Hz

The frequency of 2nd pendulum is

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0.5 Hz

1 Hz

1.5 Hz

2 Hz

When a body is vibrating its displacement from mean position

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Remains constant

Changes with time

Become(-)ve

None of these

Time period of simple pendulum only depends on

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Mass

Amplitude

Density

Length

The wave form of SHM is.

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Sine wave

Cosine wave

Tangent wave

Square wave

In S.H.M, the acceleration of the body is directly proportional to

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Weight of body

Applied force

Amplitude

Displacement

The acceleration produced by elastic restoring force is

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Perpendicular to force

Opposite to force

In same direction as force

Zero

The motion of a simple pendulum is the example of

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Vibratory motion

Rotatory motion

Periodic motion

Both a and c

A quantity which indicates the state and direction of a vibrating body is known as

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Time period

Amplitude

Phase

Frequency

If amplitude of a simple pendulum is increased by 4 times the time period will be.

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Four times

Half

Same

Two times

The time period of an oscillating mass spring system is 10 second. If mass attached to spring id doubled then time period becomes.

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10 sec

20 sec

5 sec

None of these

A phenomenon by which energy is dissipated from the oscillating system is called.

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Forced oscillation

Free oscillation

Damping

Simple harmonic motion

One complete round trip of a body is called

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Displacement

Time period

Vibration

Frequency

Second pendulum has a time period

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1 sec

3 sec

2 sec

4 sec

The mathematical expression for the restoring force is.

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F = kx

F = ma

F = dp/dt

F = -kx

A swing is good example of

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Resonance

Vibration

Time period

Oscillation

A spring of spring constant 10 N/m after loading that amplitude is 2m. Then the maximum P.E. is

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10 J

20 J

30 J

40 J

A spring has a spring constant k. If it is cut in two equal parts, the spring constant of each part will be

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K

2 K

K/2

4K

The amplitude of a vibrating body at resonance in vacuum is

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Minimum

Maximum

Zero

Infinite

The to and fro motion of a body is called

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Linear motion

Rotational motion

Vibratory motion

None of these

If the time period of simple pendulum is 2 seconds its frequency will be.

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1 Hz

0.5 Hz

1.5 Hz

2 Hz

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