Question # 1

Damping is the process in which energy

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Increases

Remains constant

Dissipates

None of these

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

A swing is good example of

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Resonance

Vibration

Time period

Oscillation

the length of simple pendulum of time period 1 second is

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2 m

1 m

0.5

0.25 m

The velocity of a particle having SHM is 'v' at means position. If its amplitude is doubled them velocity at mean position will be

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v/2

v

2v

4 v

The mathematical expression for the restoring force is.

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F = kx

F = ma

F = dp/dt

F = -kx

At which place the motion of a simple pendulum will be slowest.

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Karachi

K-2

Murree

Lahore

the distance covered during one vibration of an oscillating body in terms of amplitude 'A' is

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A/2

A

2A

4A

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

The wavelength of wave produced by microwave oven is.

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12 cm

12 m

18 m

18 cm

When a body is vibrating its displacement from mean position

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Remains constant

Changes with time

Become(-)ve

None of these

The acceleration produced by elastic restoring force is

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Perpendicular to force

Opposite to force

In same direction as force

Zero

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

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

Angular frequency is the characteristic of

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Linear motion

Vibratory motion

Circular motion

All 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

Time period of simple pendulum only depends on

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Mass

Amplitude

Density

Length

The product of time period and frequency is.

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Zero

1

2

3

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 frequency of waves produced in microwave oven is

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1435 Hz

2450 MHz

1860 MHz

2850 Hz

The wave form of SHM is.

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Sine wave

Cosine wave

Tangent wave

Square wave

Turning of radio is example of.

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Mechanical resonance

Electrical resonance

Physical resonance

Biological resonance

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

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