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

Example of vibratory motion is

Question # 2

If a wave can be polarized, it must be

Question # 3

The restoring force always directed towards the

Question # 4

The weight 'mg' of the bob is resolved into

Question # 5

The phase determines the

Question # 6

Sound waves in air always

Question # 7

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

Question # 8

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 9

When two waves with same frequency and constant phase difference phase difference interfere

Question # 10

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

Question # 11

Acceleration of the mass at any instant is given by

Question # 12

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 13

Which one of the following could be the frequency of ultraviolet radiation?

Question # 14

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Question # 15

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force
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 of the following is/are example/s if mechanical waves i.e. waves generated in _______:
A. Rope
B. Coil of spring
C. Water
D. All of them
4 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
5 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
6 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
7 A traveling wave has a shape of:
A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
8 When two progressive waves of nearly same frequencies superimpose and give rise to beats, then
A. Frequency of beat changes with time
B. Frequency of beat changes with location of observer
C. All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves
D. Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves
9 Waves transport energy
A. without transport energy
B. with matter
C. both of them
D. none of them
10 If F=0.04 N and X=4 cm then K=
A. 1 Nm-1
B. 2 Nm-1
C. 3 Nm-1
D. 4 Nm-1

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