Question # 1

If a mass of 10 gm is suspended from a spring of k = 9.8 Nm^-1, then the extension will be:

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1 cm

1 m

10 mm

None of these

SHM is type of ______ motion

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Vibratory

Linear

Circular

None

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

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

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Velocity

Period

Mass

Acceleration

A body with frequency would complete one vibration in:

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f seconds

1/f seconds

1 second

f²second

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

Which of the following forces is responsible for SHM

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Applied force

Restoring force

Fractional force

Elastic force

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

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Zero, smallest

Smallest, zero

Zero, zero

Zero, greatest

Amplitude in SHM is equivalent to_____ in circular motion:

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Diameter

Radius

Circumference

None of these

The wave form of SHM is

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Pulsed wave

Square wave

Triangular waved

Sine wave

The unit of spring constant is:

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J-sec

Metre

Nm^-1

None of these

Velocity of particle executing SHM will be maximum at

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Extreme position

Mean position

b/w mean and extreme

None

When quarter of a cycle is completed, the phase of vibration is:

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90°

180°

45°

360°

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

If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:

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250 N m^-1

25 N m^-1

2.5 N m^-1

None of these

If a given spring of spring constant K is cut into two identical segments, the spring constant of each segment is:

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K/2

2 K

4 K

None of these

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

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

Vibratory motion is always under

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Applied force

Restoring force

Periodic force

Gravitational force

The graph showing the variation of displacement with time is a

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Sine curve

Straight line

Parabola

None of these

An object undergoes SHM. Its maximum equilibrium positions:

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Maximum

Half of its maximum value

Zero

None

When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.:

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Increases

Decreases

Remains constant

None of these

The string of a simple pendulum should be:

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Heavy

Extensible

In-extensible

None of these

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

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Infinity

Maximum

Zero

Minimum

Which one of the following is an example of SHM:

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Motion in a plane

Motion in a swing

Motion in a car

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

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

The unit of spring constant is

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J-sec

Metre

Nm^-1

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 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

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