Question # 1

Time period of simple pendulum is independent of

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length

mass

acceleration due to gravity

none of them

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

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applied force

momentum

restoring force

none of them

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

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400 m/sec

40 m/sec

430 m/sec

300 m/sec

A weakly damped system has fairly

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sharp resonance curve

flat resonance curve

both of them

none of them

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

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Stationary waves

Transverse waves

Both of these

None of these

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

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Energy, momentum and mass

Energy

Energy and mass

Energy and linear momentum

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

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1 : 2

4 : 1

1 : 4

2 : 1

Which one of the following elasticizes is possessed by fluids:

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Young's elastic modulus (length)

Bulk elastic modulus (volume)

Modulus of rigidity (shape)

None of these

The bob of a simple pendulum is suspended by

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string

heavy inextensible string

light extensible string

light inextensible string

The restoring force always directed towards the

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extreme position

mean position

both of them

none of them

The time required to complete on vibration is called

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frequency

total time

time period

velocity

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

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Longitudinal wave

Transverse wave

No vibration at all

None of them

A simple pendulum consists of a

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small light bob

small heavy bob

big light bob

big heavy bob

The waves which propagate by the collision of material particles are known as

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e.m. waves

mechanical waves

light waves

microwaves

One complete round trip of the body about its mean position is called

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displacement

vibration

a complete motion

an acceleration

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