Question # 1

The wavelength of wave produced by microwave oven is.

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12 cm

12 m

18 m

18 cm

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 frequency of 2nd pendulum is

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0.5 Hz

1 Hz

1.5 Hz

2 Hz

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

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Time period

Amplitude

Phase

Frequency

Time period of simple pendulum only depends on

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Mass

Amplitude

Density

Length

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 mathematical expression for the restoring force is.

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F = kx

F = ma

F = dp/dt

F = -kx

One complete round trip of a body is called

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Displacement

Time period

Vibration

Frequency

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

The acceleration produced by elastic restoring force is

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Perpendicular to force

Opposite to force

In same direction as force

Zero

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

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Karachi

K-2

Murree

Lahore

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 produce oscillation, body is pulled away from its

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Mean position

Extreme position

Both a and b

None of these

The amplitude of a vibrating body at resonance in vacuum is

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Minimum

Maximum

Zero

Infinite

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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 swing is good example of

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Resonance

Vibration

Time period

Oscillation

Oscillation of shock absorber of a car is practical example of.

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simple harmonic motion

Forced oscillation

Damped oscillation

Undamped oscillation

P.E. of a spring is stored in

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Spring

mass

Both of them

None of these

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 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

One complete round trip of a vibrating body is called.

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Frequency

Time period

Vibration

Amplitude

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

In simple harmonic motion the velocity of a particle is maximum at.

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Extreme position

Mean position

In between extreme and mean position

None of them

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