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

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

Question # 2

SI unit of frequency is

Question # 3

Fidelity refers to

Question # 4

The velocity of sound at same temperature is maximum in

Question # 5

Sound waves in air always

Question # 6

Time period of a simple pendulum depends upon the

Question # 7

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

Question # 8

If a wave can be polarized, it must be

Question # 9

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

Question # 10

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 11

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 12

In stationary waves

Question # 13

Longitudinal waves are also called:

Question # 14

Which one of the following elasticizes is possessed by fluids:

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
2 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
3 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
4 Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?
A. 103
B. 106
C. 109
D. 1012
5 When a body moves to and fro motion, this type of motion is called
A. translatory motion
B. circular motion
C. oscillatory motion
D. all of them
6 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
7 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
A. Same
B. 2 times
C. 4 times
D. 8 times
8 In case of mechanical waves, we study the motion of
A. a single particle
B. collection of particle
C. any one of them
D. none of them
9 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
10 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
D. none of them

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