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

In the same medium, velocity of the wave:

Question # 2

The portion of the water above its mean level forms a:

Question # 3

If the length of a simple pendulum is 0.25 m its time period would be

Question # 4

Which of the following changes at an antinode in a stationary wave?

Question # 5

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

Question # 6

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

Question # 7

Laplace formula is derived from

Question # 8

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Question # 9

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 10

The weight 'mg' of the bob is resolved into

Question # 11

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 12

The expression for restoring force is

Question # 13

Shock absorber of the car is an example of

Question # 14

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

Question # 15

To hear a clear echo, the reflecting surface must be at a minimum distance of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
2 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
3 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
4 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them
5 Which waves are used in sonography?
A. Microwaves
B. Infra red waved
C. Sound waves
D. Ultrasonic waves
6 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
7 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
8 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
9 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed
10 The principle of superposition states that
A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually
B. Two stationary waves superimpose to give two progressive waves
C. A diffraction pattern consists of many interference patterns superimposed on one another
D. Two progressive waves superimpose to give a stationary wave

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