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, the resonance will be

Question # 2

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

Question # 3

Angular frequency 'w' is basically a characteristics of

Question # 4

Decibel is unit of

Question # 5

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

Question # 6

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 # 7

Which of the following is the longitudinal waves?

Question # 8

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

Question # 9

A second's pendulum is a pendulum whose time period is

Question # 10

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

Question # 11

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

Question # 12

The time period of pendulums of different lengths would be

Question # 13

Example of vibratory motion is

Question # 14

Shock absorber of the car is an example of

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
2 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
3 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
4 The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be
A. 1 : 2
B. 4 : 1
C. 1 : 4
D. 2 : 1
5 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
6 When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be
A. W=Kxo
B. W=1/2Kxo
C. W=1/2Kx2o
D. W=4Kxo
7 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
8 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
9 If a wave can be polarized, it must be
A. An electromagnetic wave
B. A longitudinal wave
C. A progressive wave
D. A transverse wave
10 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them

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