Question # 1

The number of vibration in two seconds can be expressed as

______ of frequency of vibration is f:

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f

2 f

3 f

1/2 f

The S.I unit of frequency is

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Vibrations s^-2

Ms^-1

Hertz

s^-1

Second's pendulum is the pendulum whose time period is:

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1 second

2 second

3 second

None of these

Which of the following is an example of SHM(in ideal situations)

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Motion of simple pendulum

Motion of horizontal spring man system

Motion of violin string

All of these

The restoring force is _____ and opposite to the applied force within ______,:

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Equal, elastic limit

Different, the walls of the laboratory

Different, elastic limit

None of these

The SI unit of spring constant is identical with that of:

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Force

Surface tension

Pressure

Loudness

The graph showing the variation of displacement with time is a

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Sine curve

Straight line

Parabola

None of these

Acceleration of body executing SHM is always directed towards

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Extreme position

Mean position

Along the direction of motion

None

A body of mass 0.031 kg attached to one end of a spring of spring constant 0.3 N/m, then time period of spring mass system will be:

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1.5 sec

2.0 sec

2.3 sec

2.5 sec

A body with frequency would complete one vibration in:

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f seconds

1/f seconds

1 second

f²second

The restoring force is ______ and opposite tot he applied force within ______

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Equal, Elastic limit

Different, The walls of the laboratory

Different, Elastic limit

None of these

Vibratory motion is always under

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Applied force

Restoring force

Periodic force

Gravitational force

Amplitude in SHM is equivalent to ______ in circular motion:

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Diameter

Radius

Circumference

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

The time taken to complete one vibration is called:

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Frequency

Amplitude

Time

Time period

A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle:

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Circular motion, circumference

Vibrator, chord

SHM, diameter

SHM, circumference

An oscillating body oscillates due to:

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Applied force

Restoring force

Frictional force

None of these

The string of a simple pendulum should be:

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Heavy

Extensible

In-extensible

None of these

A particle is moving along a circular path with uniform speed. Its projection will execute ___along the _____ of the circle:

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Circular motion, circumference

Vibratory, chord

SHM, diameter

SHM, circumference

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

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90°

180°

45°

360°

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

The maximum distance of body from mean position when body is executing SHM is called

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Time period

Displacement

Amplitude

Frequency

An object undergoes SHM. Its maximum equilibrium positions:

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Maximum

Half of its maximum value

Zero

None

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

In SHM, the acceleration is ______ when velocity is _____:

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Zero, smallest

Smallest, zero

Zero, zero

Zero, greatest

In SHM, there is always a constant ratio between displacement if body and its:

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Velocity

Period

Mass

Acceleration

The acceleration of body executing SHM is directly proportional to

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Applied force

Amplitude

Displacement

Frictional force

Which of the following quantity for particle executing SHM is non-zero at mean position

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Force

Acceleration

Velocity

Displacement

The unit of spring constant is:

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J-sec

Metre

Nm^-1

None of these

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