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 waves which propagate by the collision of material particles are known as

Question # 2

Which of the following is not mechanical wave?

Question # 3

Longitudinal waves are also called:

Question # 4

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

Question # 5

The velocity of sound in air not effected by changes in

Question # 6

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 7

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 8

The damping depends upon the

Question # 9

Energy is not carried by

Question # 10

In the resonance condition, the amplitude of the oscillator becomes

Question # 11

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 12

Acceleration of the mass at any instant is given by

Question # 13

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

Question # 14

The velocity of sound at same temperature is maximum in

Question # 15

Fidelity refers to

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
2 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:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
3 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
4 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
5 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
6 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
7 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them
8 Which waves are used in sonography?
A. Microwaves
B. Infra red waved
C. Sound waves
D. Ultrasonic waves
9 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
10 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them

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