Question # 1

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

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 wave form of SHM is

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Pulsed wave

Square wave

Triangular waved

Sine wave

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

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90°

180°

45°

360°

Amplitude in SHM is equivalent to ______ in circular motion:

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Diameter

Radius

Circumference

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

Amplitude in SHM is equivalent to_____ in circular motion:

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Diameter

Radius

Circumference

None of these

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, the phase of vibration is:

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90°

180°

45°

360°

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

Hertz is unit of:

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Time period

Displacement

Amplitude

Frequency

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

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

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

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k/2

2 k

4 k

None of these

The time taken to complete one vibration is called:

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Frequency

Amplitude

Time

Time period

An object undergoes SHM. Its maximum equilibrium positions:

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Maximum

Half of its maximum value

Zero

None

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

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1 second

2 second

3 second

None of these

If a force of 0.05 N produces an elongation of 20 mm in 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

The body oscillates due to ______ accelerates and overshoots the rest position due to _______

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Applied force, Inertia

Restoring force, Friction

Frictional force, Inertia

Restoring force, Inertia

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

Free oscillations are always produced by:

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An applied force

Gravitational force

Restoring force and inertia

Inertia only

Which of the following forces is responsible for SHM

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Applied force

Restoring force

Fractional force

Elastic force

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

The graph showing the variation of displacement with time is a:

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Sine curve

Straight line

Parabola

None of these

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

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Force

Surface tension

Pressure

Loudness

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 unit of spring constant is

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J-sec

Metre

Nm^-1

None of these

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

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

A particle executes SHM with frequency. The frequency with which its K.E oscillates is

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f/2

2f

f

4f

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