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

If a freely oscillating system is subjected to an external force, then

Question # 2

Two sources of sound are said to be coherent if

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

The example of mechanical wave is

Question # 7

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

Question # 8

Which of the following is the longitudinal waves?

Question # 9

A swing has

Question # 10

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

Question # 11

The wave form of S.H.M will be

Question # 12

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Question # 13

Which type of wave can be set up in solids

Question # 14

Which of the following is not mechanical wave?

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator
A. greater than the frequency of applied force
B. equal to the frequency of applied force
C. less than the frequency of applied force
D. all of them
2 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
3 If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
A. Increasing by a factor of 2
B. Decreasing by a factor of 2
C. Decreasing by a factor of 4
D. Unchanged
4 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
5 In case of mechanical waves, we study the motion of
A. a single particle
B. collection of particle
C. any one of them
D. none of them
6 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
7 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
8 Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of
A. very small energy
B. very large energy
C. frictional forces
D. acceleration due to gravity
9 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
10 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

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