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

For transmission of both transverse and longitudinal waves, we can use:

Question # 2

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

Question # 3

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Question # 4

A heavily damped system has a fairly

Question # 5

The velocity of sound at same temperature is maximum in

Question # 6

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

Question # 7

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

Question # 8

Which one of the following wave motions is transverse:

Question # 9

The distance covered by the wave in one second is:

Question # 10

Example of vibratory motion is

Question # 11

The weight 'mg' of the bob is resolved into

Question # 12

The vibratory or oscillatory motion of a body is

Question # 13

Mechanical waves on the surface of a liquid are

Question # 14

Which of the following is not mechanical wave?

Question # 15

Velocity of sound in vacuum (in m/s) is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Through which character we can distinguish the light waves from sound waves
A. Interference
B. Refraction
C. Polarization
D. Reflection
2 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them
3 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz
4 Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator
A. greater than the frequency of applied force
B. equal to the frequency of applied force
C. less than the frequency of applied force
D. all of them
5 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
6 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
7 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
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
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall
9 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
10 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma

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