ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

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

Acceleration of the mass at any instant is given by

Question # 2

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

Question # 3

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

Question # 4

The expression for restoring force is

Question # 5

Which one is not produced by sound waves in air?

Question # 6

Which one of the following wave motions is transverse:

Question # 7

The distance covered by the wave during one period is called its:

Question # 8

SI unit of wave length is:

Question # 9

A simple pendulum consists of a

Question # 10

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 11

When a wave is travels from one place to another, it transfers:

Question # 12

Fluids can transmit:

Question # 13

The distance covered by the wave in one second is:

Question # 14

Which of the following is the longitudinal waves?

Question # 15

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 16

When a body moves to and fro motion, this type of motion is called

Question # 17

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 # 18

The bob of a simple pendulum is suspended by

Question # 19

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 20

The waves moving from a sitar to a listener in air are

Question # 21

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

Question # 22

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 23

The phase determines the

Question # 24

A physical system under going forced vibrations is known as

Question # 25

The force which opposes the applied force producing the displacement in the spring is called

Question # 26

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 27

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 # 28

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 29

The example of mechanical wave is

Question # 30

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
2 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
3 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
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 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
6 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
7 Fidelity refers to
A. Reproduction of original sound
B. Reproduction of original image
C. Reproduction of music
D. Reproduction of a CD from original copy
8 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
9 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
10 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic

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