ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

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

Question # 2

Which of the following is an example of a S.H.M?

Question # 3

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

Question # 4

The total energy of spring mass system is

Question # 5

The maximum displacement of a body on either side of its equilibrium position is called

Question # 6

The damping depends upon the

Question # 7

Which of the following is not mechanical wave?

Question # 8

The wave motion set up in any medium depends upon:

Question # 9

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

Question # 10

Smaller the damping, the resonance will be

Question # 11

The time period of pendulums of different lengths would be

Question # 12

Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

Question # 13

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 14

Which one is not produced by sound waves in air?

Question # 15

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

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Sr.# Question Answer
1 The speed of sound in a medium depends on
A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property
2 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
3 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them
4 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
5 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
6 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
7 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
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 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
10 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion

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