ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

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 instantaneous velocity of a body moving along a circle is directed

Question # 2

The principle of superposition states that

Question # 3

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

Question # 4

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 5

For a body executing S. H. M, its

Question # 6

The expression of Hook's law is

Question # 7

Waves transport energy

Question # 8

The time period of pendulums of different lengths would be

Question # 9

If the time period a simple pendulum is 2 s, its frequency would be

Question # 10

When temperature increase, the frequency of a tuning fork

Question # 11

The wave form of S.H.M will be

Question # 12

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

Question # 13

The restoring force always directed towards the

Question # 14

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

Question # 15

Energy is not carried by

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
3 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
4 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them
5 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field
6 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
7 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
8 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
9 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
10 For transmission of both transverse and longitudinal waves, we can use:
A. Solid
B. Gas
C. Plasma
D. None of these

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