ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

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

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 2

A swing has

Question # 3

Which one of the following elasticizes is possessed by fluids:

Question # 4

In case of mechanical waves, we study the motion of

Question # 5

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 6

Fidelity refers to

Question # 7

Time period of simple pendulum is independent of

Question # 8

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 9

A simple pendulum consists of a

Question # 10

A body is executing free vibrations when it oscilates

Question # 11

A heavily damped system has a fairly

Question # 12

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

Question # 13

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 14

There is no net transfer of energy by particle of medium in

Question # 15

A weakly damped system has fairly

Question # 16

Mechanical waves on the surface of a liquid are

Question # 17

Angular frequency 'w' is basically a characteristics of

Question # 18

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 19

For transmission of both transverse and longitudinal waves, we can use:

Question # 20

If a wave can be polarized, it must be

Question # 21

Smaller the damping, the resonance will be

Question # 22

Of the following, the option ______ reminds of longitudinal waves.

Question # 23

The damping depends upon the

Question # 24

If F=0.04 N and X=4 cm then K=

Question # 25

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

Question # 26

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 # 27

Which of the following does not exhibit S.H.M?

Question # 28

The total energy of spring mass system is

Question # 29

Which one of the following is an example of resonance

Question # 30

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In a resonance situation the amplitude of the motion may become extra ordinarily large, if
A. the driving force is large
B. the driving force is zero
C. the driving force may be feeble
D. all of them
2 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
3 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
4 For production of beats the two sources must have
A. Different frequencies and same amplitude
B. Different frequencies
C. Different frequencies, same amplitude and same phase
D. Different frequencies and same phase
5 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
6 A traveling wave has a shape of:
A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
7 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
8 The characteristic of a body executing S.H.M is that its acceleration is
A. inversely proportional to displacement
B. directly proportional to displacement
C. independent of displacement
D. equal to zero
9 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
10 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic

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