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 characteristic of a body executing S.H.M is that its acceleration is

Question # 2

Example of vibratory motion is

Question # 3

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

Question # 4

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 5

While describing the motion of a simple pendulum, the frictional effects are

Question # 6

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 7

Decibel is unit of

Question # 8

The expression for restoring force is

Question # 9

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

Question # 10

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

Question # 11

The number of vibrating body at any instant from its equilibrium position is called

Question # 12

Time period of a simple pendulum depends upon the

Question # 13

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 14

When the bob of simple pendulum is at extreme position, its K.E. will be

Question # 15

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

Question # 16

When a wave is travels from one place to another, it transfers:

Question # 17

When two waves with same frequency and constant phase difference phase difference interfere

Question # 18

Fluids can transmit:

Question # 19

Two sources of sound are said to be coherent if

Question # 20

Angular frequency 'w' is basically a characteristics of

Question # 21

The velocity of sound in air not effected by changes in

Question # 22

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 # 23

The instantaneous velocity of a body moving along a circle is directed

Question # 24

Through which character we can distinguish the light waves from sound waves

Question # 25

Smaller the damping, the resonance will be

Question # 26

If the mass of the simple pendulum becomes double, its time period

Question # 27

Si units of time period is

Question # 28

When the bob of simple pendulum is at mean position, its K.E will be

Question # 29

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 30

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
3 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
4 Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
A. waves
B. beat
C. interference
D. resonance
5 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field
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
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall
7 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
8 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
9 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
10 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

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