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

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 2

A heavily damped system has a fairly

Question # 3

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

Question # 4

Which one is not produced by sound waves in air?

Question # 5

The loudness and pitch of a sound note depends on

Question # 6

In the resonance condition, the amplitude of the oscillator becomes

Question # 7

Mechanical waves on the surface of a liquid are

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

The vibratory or oscillatory motion of a body is

Question # 12

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

Question # 13

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 14

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

Question # 15

Which type of wave can be set up in solids

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 A physical system under going forced vibrations is known as
A. Simple harmonic oscillator
B. Compound harmonic oscillator
C. Physical harmonic oscillator
D. driven harmonic oscillator
2 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
3 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
4 The temperature at which the speed of sound becomes double as was at 27°C is
A. 273°C
B. 0°C
C. 927°C
D. 1027°C
5 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
6 Two sources of sound are said to be coherent if
A. The produce sounds of equal intensity
B. They produce sounds of equal frequency
C. They produce sound waves vibrating with the same phase
D. They produce sound waves with zero or constant phase difference all instant of time
7 When a wave is travels from one place to another, it transfers:
A. Matter
B. Energy
C. Momentum
D. Both B and C
8 Acceleration of the mass at any instant is given by
A. a=k/m x
B. a= - m/k x
C. a = - k/m x
D. a=m/k x
9 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
10 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them

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