Question # 1

Example of progressive wave is

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transverse waves

longitudinal waves

both of them

none of them

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

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

For production of beats the two sources must have

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Different frequencies and same amplitude

Different frequencies

Different frequencies, same amplitude and same phase

Different frequencies and same phase

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

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Velocity

Frequency

Wavelength

All the above

When temperature increase, the frequency of a tuning fork

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Increases

Decreases

Remains same

Increase or decreases depending on the material

The portion of the water above its mean level forms a:

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Crest

Trough

Both A and B

None of these

The restoring force always directed towards the

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extreme position

mean position

both of them

none of them

Decibel is unit of

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Intensity of light

x-ray radiation capacity

sound loudness

Energy of radiation

Which of the following is not mechanical wave?

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Sound wave

Light wave

wave produced in spring

None of them

For a body executing S. H. M, its

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momentum remains constant

potential energy remains constant

kinetic energy remains constant

total energy remains constant

A second's pendulum is a pendulum whose time period is

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1 second

2 seconds

3 seconds

4 seconds

In solids, only following type/s of wave can travel:

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Transverse

Longitudinal

Both A and B

None of them

Which one of the following wave motions is transverse:

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Wave motion produced in water when a piece of stone is thrown into it

Pulling of weight hanging vertically with a spiral spring

Both of these

None of these

The square of 0.4 is:

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Greater than 0.4

Smaller than 0.4

Equal to 0.4

None of them

A physical system under going forced vibrations is known as

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Simple harmonic oscillator

Compound harmonic oscillator

Physical harmonic oscillator

driven harmonic oscillator

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