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

Smaller the damping, greater will be the

Question # 2

transverse wave motion is possible in:

Question # 3

The time required to complete on vibration is called

Question # 4

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 5

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 6

The bob of a simple pendulum is suspended by

Question # 7

The wave motion set up in any medium depends upon:

Question # 8

Two sources of sound are said to be coherent if

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

The restoring force always directed towards the

Question # 13

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 14

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 15

Ultra-violet rays differ from X-rays in that they

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
A. Longitudinal waves
B. Transverse waves
C. Water waves
D. Complex waves
3 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
4 A wave, which transfer energy by moving away from the source of disturbance is called a
A. progressive wave
B. travelling wave
C. both of them
D. none of them
5 When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be
A. P.E=Kx2o
B. P.E= 1/2kxo
C. P.E=1/2Kx2o
D. P.E=Kx2o
6 When an oscillatory motion repeats itself, then this type of motion is called
A. vibratory motion
B. constant motion
C. fixed motion
D. periodic motion
7 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
8 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves
9 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
10 A second's pendulum is a pendulum whose time period is
A. 1 second
B. 2 seconds
C. 3 seconds
D. 4 seconds

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