Question # 1

The string of a simple pendulum should be:

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Heavy

Extensible

In-extensible

None of these

An oscillating body oscillates due to:

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Applied force

Restoring force

Frictional force

None of these

A spring of constant k = 0.4 N m^-1is to be extended through 10 cm at a place where g = 10 m sec^-2. The mass to be suspended should be:

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4 gms

0.4 gm

40 gms

None of these

Free oscillations are always produced by:

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An applied force

Gravitational force

Restoring force and inertia

Inertia only

When a body is vibrating, the displacement from mean position

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Increases with time

Decreases with time

Changes with time

None of these

An angle of 180° in circular motion is equivalent to ______ in SHM.

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Half the vibration

One vibration

3/4th of a vibration

None of these

Amplitude is the displacement of the vibrating body from:

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One extreme position to the other extreme position

Mean position any one extreme position

Both A and B are correct

None of these

In vibrational motion(SHM)

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P.E remains conserved

Average K.E remain constant

Neither P.E nor K.E remains constant

Total energy remains constant

An object in SHM will have maximum speed when its displacement from equilibrium position is:

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Infinity

Maximum

Zero

Minimum

The time period of a simple pendulum is independent of its:

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Length

Mass

Value of g

Both A and B

The time taken to complete one vibration is called:

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Frequency

Amplitude

Time

Time period

Velocity of particle executing SHM will be maximum at

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Extreme position

Mean position

b/w mean and extreme

None

The number of vibrations in two seconds can be expressed as______if frequency of vibration is f.

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f

2 f

3 f

1/2 f

When quarter of a circle is completed, phase of vibration is:

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90°

180°

45°

360°

A spring of constant k = 0.4 N m^-1_{is to be extended thorugh 10 cm at a place where g = 10 m sec}^-2. The mass to be suspended should be:

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4 gms

0.4 gms

40 gms

None of these

The SI unit of spring constant is identical with that of

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Force

Surface tension

Pressure

Loudness

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