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

Which one is not produced by sound waves in air?

Question # 2

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

Question # 3

Angular frequency 'w' is basically a characteristics of

Question # 4

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

Question # 5

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 6

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 7

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

Question # 8

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 # 9

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

Question # 10

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

Question # 11

Which of the following is the longitudinal waves?

Question # 12

Fidelity refers to

Question # 13

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

Question # 14

The waves produced in a microwave oven have wavelength.

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
2 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
3 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
4 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above
5 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
6 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
7 Through which character we can distinguish the light waves from sound waves
A. Interference
B. Refraction
C. Polarization
D. Reflection
8 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
9 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
10 A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:
A. Longitudinal wave
B. Transverse wave
C. No vibration at all
D. None of them

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