Question # 1

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

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Force

Acceleration

Velocity

Displacement

Which of the following forces is responsible for SHM

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Applied force

Restoring force

Fractional force

Elastic force

The SI unit of spring constant is identical with that of

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Force

Surface tension

Pressure

Loudness

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

If there identical strings each of constant K are hooked together the spring constant of resultant spring will be:

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3 K

2 K

K/4

K/3

An object undergoes SHM. Its maximum equilibrium positions:

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Maximum

Half of its maximum value

Zero

None

An oscillating body oscillates due to:

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Applied force

Restoring force

Frictional force

None of these

SHM is type of ______ motion

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Vibratory

Linear

Circular

None

The string of a simple pendulum should be:

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Heavy

Extensible

In-extensible

None of these

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

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Length

Mass

Value of g

Both A and B

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

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90°

180°

45°

360°

Free oscillations are always produced by:

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An applied force

Gravitational force

Restoring force and inertia

Inertia only

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

If mass of 10 gm is suspended from a spring of K=0.8 Nm^-1then the extension will be:

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10 cm

1 m

10 mn

None of these

If time period of a pendulum is doubled by increasing its length, then its frequency will

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Also be doubled

Become half

Become one fourth

Becomes four times

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

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