Question # 1

Which of the following is the longitudinal waves?

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Sound waves

Waves on plucked string

Water waves

Light waves

When a body is performing S.H.M., its acceleration is

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inversely proportional to the displacement

directly proportional to the applied force

directly proportional to the amplitude

directly proportional to the displacement but in opposite direction

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

The process in which energy is dissipated from the oscillating system is known as

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resonance

interference

diffraction

damping

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

The characteristic of a body executing S.H.M is that its acceleration is

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inversely proportional to displacement

directly proportional to displacement

independent of displacement

equal to zero

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

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maximum

zero

half of the maximum value

one third of the maximum value

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

transverse wave motion is possible in:

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Air

A mixture of NH₃and O₂

Strings

All of these

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

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subsonic speed

sonic speed

super sonic speed

any one of them

The expression for restoring force is

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F=ma

F=kx

F= -kx

Kx=ma

The waves produced in a microwave oven have wavelength.

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12 mm

12 cm

12 m

12 mm

The loudness and pitch of a sound note depends on

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Intensity and velocity

Frequency and velocity

Intensity and frequency

Frequency and number of harmonic

In transverse waves, the individual particles of the medium move:

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In circles

Perpendicular to the direction of level

Parallel to the direction of level

None of these

Velocity of sound in vacuum (in m/s) is

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330

1000

156

0

A traveling wave has a shape of:

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Square wave

Sine wave

Parabola

hyperbola

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ECAT Physics Chapter 8 Waves Online Test MCQs With Answers

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