ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

The weight 'mg' of the bob is resolved into

Question # 2

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

Question # 3

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 # 4

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

Question # 5

If we increase the length of a simple pendulum four times, its time period will become

Question # 6

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 # 7

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 # 8

Shock absorber of the car is an example of

Question # 9

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 10

Which one of the following is an example of resonance

Question # 11

Mechanical waves on the surface of a liquid are

Question # 12

Which one of the following elasticizes is possessed by fluids:

Question # 13

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 # 14

In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is

Question # 15

Smaller the damping, greater will be the

Question # 16

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

Question # 17

Which of the following is not mechanical wave?

Question # 18

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 19

If a wave can be polarized, it must be

Question # 20

Angular frequency 'w' is basically a characteristics of

Question # 21

The waves produced in a microwave oven have frequency

Question # 22

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

Question # 23

The velocity of sound is greatest in

Question # 24

Crests and troughs are formed in:

Question # 25

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 26

In stationary waves

Question # 27

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 28

Example of progressive wave is

Question # 29

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 30

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The process in which energy is dissipated from the oscillating system is known as
A. resonance
B. interference
C. diffraction
D. damping
2 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
3 When the bob of simple pendulum is at mean position, its K.E will be
A. maximum
B. minimum
C. zero
D. all of them
4 Through which character we can distinguish the light waves from sound waves
A. Interference
B. Refraction
C. Polarization
D. Reflection
5 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
6 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
7 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
8 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times
9 Time period of simple pendulum is independent of
A. length
B. mass
C. acceleration due to gravity
D. none of them
10 A second's pendulum is a pendulum whose time period is
A. 1 second
B. 2 seconds
C. 3 seconds
D. 4 seconds

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