ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 2

The wave motion set up in any medium depends upon:

Question # 3

A physical system under going forced vibrations is known as

Question # 4

The distance covered by the wave during one period is called its:

Question # 5

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

Question # 6

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 7

When the bob of simple pendulum is at mean position, its K.E will be

Question # 8

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 9

Which waves are used in sonography?

Question # 10

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

Question # 11

Time period of a simple pendulum depends upon the

Question # 12

A body is executing free vibrations when it oscilates

Question # 13

Time period of simple pendulum is independent of

Question # 14

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 15

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
2 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
3 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
4 A wave, which transfer energy by moving away from the source of disturbance is called a
A. progressive wave
B. travelling wave
C. both of them
D. none of them
5 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
6 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
7 Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at
A. subsonic speed
B. sonic speed
C. super sonic speed
D. any one of them
8 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
9 For production of beats the two sources must have
A. Different frequencies and same amplitude
B. Different frequencies
C. Different frequencies, same amplitude and same phase
D. Different frequencies and same phase
10 With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
A. Energy, momentum and mass
B. Energy
C. Energy and mass
D. Energy and linear momentum

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