ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

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 # 2

The wave form of S.H.M will be

Question # 3

Smaller the damping, the resonance will be

Question # 4

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

Question # 5

The bob of a simple pendulum is suspended by

Question # 6

Shock absorber of the car is an example of

Question # 7

If F=0.04 N and X=4 cm then K=

Question # 8

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 9

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

Question # 10

The wave motion set up in any medium depends upon:

Question # 11

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 12

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 # 13

Laplace formula is derived from

Question # 14

A traveling wave has a shape of:

Question # 15

Mechanical waves on the surface of a liquid are

Question # 16

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

Question # 17

The phase determines the

Question # 18

The process in which energy is dissipated from the oscillating system is known as

Question # 19

Which one of the following is an example of resonance

Question # 20

The speed of sound in a medium depends on

Question # 21

The time required to complete on vibration is called

Question # 22

Two sources of sound are said to be coherent if

Question # 23

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 24

If the mass of the simple pendulum becomes double, its time period

Question # 25

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

Question # 26

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 27

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

Question # 28

At 'resonance' the transfer of energy from deriving source to the oscillator is

Question # 29

The expression for restoring force is

Question # 30

A weakly damped system has fairly

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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 The waves which propagate through the oscillations of material particles are known as:
A. Mechanical waves
B. Electromagnetic waves
C. Any of them
D. None of them
3 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
4 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
5 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
6 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
A. Same
B. 2 times
C. 4 times
D. 8 times
7 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
8 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
9 When the bob of simple pendulum is at mean position, its K.E will be
A. maximum
B. minimum
C. zero
D. all of them
10 A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:
A. Longitudinal wave
B. Transverse wave
C. No vibration at all
D. None of them

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