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 a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 2

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

Question # 3

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 4

A heavily damped system has a fairly

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

Acceleration of the mass at any instant is given by

Question # 7

In the resonance condition, the amplitude of the oscillator becomes

Question # 8

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 9

In compressional wave,the layer of medium having reduced pressure is called:

Question # 10

The speed of sound in a medium depends on

Question # 11

For production of beats the two sources must have

Question # 12

Laplace formula is derived from

Question # 13

The time required to complete on vibration is called

Question # 14

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 15

Angular frequency 'w' is basically a characteristics of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 A heavily damped system has a fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
2 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
3 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
4 It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall
5 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
6 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
7 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
8 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
9 The restoring force always directed towards the
A. extreme position
B. mean position
C. both of them
D. none of them
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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