Question # 1

Time period of a simple pendulum depends upon the

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length of the pendulum

acceleration due to gravity

none of them

both of them

The velocity of sound in air depends upon

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Density and elasticity of gas

Pressure

Wavelength

Amplitude and frequency of sound

Sound waves in air always

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Longitudinal

Transverse

Stationary

Electromagnetic

At 'resonance' the transfer of energy from deriving source to the oscillator is

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maximum

minimum

zero

none of them

SI unit of frequency is

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second

hertz

revolution

vibrations/sec

The distance covered by the wave in one second is:

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Wave number

Wave length

Frequency

Wave speed

If a wave can be polarized, it must be

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An electromagnetic wave

A longitudinal wave

A progressive wave

A transverse wave

When sound waves travel from air to water which of these remains constant?

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Velocity

Frequency

Wavelength

All the above

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

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

The wave motion set up in any medium depends upon:

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Elasticity

Inertia

Density

All of these

Laplace formula is derived from

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Isothermal change

Adiabatic change

Isobaric change

None of these

There is no net transfer of energy by particle of medium in

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Longitudinal wave

Transverse wave

Progressive wave

Stationary wave

In stationary waves

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Energy is uniformly distributed

Energy is minimum at nodes and maximum at antinodes

Energy is maximum at nodes and minimum at antidotes

Alternating maximum and minimum energy producing at nodes and antinodes

The vibratory or oscillatory motion of a body is

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translatory motion

back and forth motion about its mean position

free all motion

circular motion

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

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360 m/s

306 m/s

331 m/s

340 ms

Which one of the following could be the frequency of ultraviolet radiation?

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1.0 x 10⁶Hz

1.0 x 10⁹Hz

1.0 x 10¹²Hz

1.0 x 10¹⁵Hz

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