ECAT Pre General Science Chapter 8 online mcq test with answers for Physics chapter 8 (Waves)

ECAT Pre General Science Physics Chapter 8 Waves Online Test

Try the ECAT Pre General Science Physics Chapter 8 Waves Online Test.

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ECAT Pre General Science Physics Chapter 8 Waves Online Test

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Question # 1

A heavily damped system has a fairly

sharp resonance curve A
flat resonance curve B
both of them C
none of them D

Question # 2

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

increase A
decreases B
remains constant C
none of them D

Question # 3

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

restoring force A
periodic force B
centripetal force C
resistive force D

Question # 4

The natural frequency of a pendulum which is vibrating freely, depends upon its

mass A
length B
material C
all of them D

Question # 5

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Frequency of beat changes with time A
Frequency of beat changes with location of observer B
All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves C
Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves D

Question # 6

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

330 A
1000 B
156 C
0 D

Question # 7

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Longitudinal waves A
Transverse waves B
Water waves C
Complex waves D

Question # 8

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

360 m/s A
306 m/s B
331 m/s C
340 ms D

Question # 9

Time period of simple pendulum is independent of

length A
mass B
acceleration due to gravity C
none of them D

Question # 10

The number of vibrating body at any instant from its equilibrium position is called

displacement A
frequency B
amplitude C
time period D

Question # 11

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

10³ A
10⁶ B
10⁹ C
10¹² D

Question # 12

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

longitudinal waves A
transverse waves B
non-mechanical waves C
none of them D

Question # 13

Ultra-violet rays differ from X-rays in that they

Cannot be diffracted A
Cannot be polarized B
Have a lower frequency C
Are deviated when they pass through a magnetic field D

Question # 14

The velocity of sound is greatest in

Water A
Air B
Vacuum C
Metal D

Question # 15

Which waves are used in sonography?

Microwaves A
Infra red waved B
Sound waves C
Ultrasonic waves D

Question # 16

Which of the following does not exhibit S.H.M?

a plucked violin string A
a mass attached to a spring B
a train shunting between two terminals C
a simple pendulum D

Question # 17

Smaller the damping, greater will be the

frequency A
wavelength B
amplitude C
none of them D

Question # 18

A swing has

one natural frequency A
two natural frequencies B
three natural frequencies C
four natural frequencies D

Question # 19

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

e.m. waves A
mechanical waves B
sound waves C
water waves D

Question # 20

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

Compression A
Elasticity B
Node C
Rarefaction D

Question # 21

The distance covered by the wave in one second is:

Wave number A
Wave length B
Frequency C
Wave speed D

Question # 22

Waves transport energy

without transport energy A
with matter B
both of them C
none of them D

Question # 23

SI unit of frequency is

second A
hertz B
revolution C
vibrations/sec D

Question # 24

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

maximum A
zero B
half of the maximum value C
one third of the maximum value D

Question # 25

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

Longitudinal progressive A
Longitudinal stationary B
Transverse progressive C
Transverse stationary D

Question # 26

Which of the following is the longitudinal waves?

Sound waves A
Waves on plucked string B
Water waves C
Light waves D

Question # 27

Of the following, the option ______ reminds of longitudinal waves.

Sound waves A
Heat waves B
Electromagnetic waves C
Light waves D

Question # 28

Fluids can transmit:

Transverse wave A
Compressional wave B
Both of them C
None of them D

Question # 29

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

translatory motion A
circular motion B
oscillatory motion C
all of them D

Question # 30

When an oscillatory motion repeats itself, then this type of motion is called

vibratory motion A
constant motion B
fixed motion C
periodic motion D

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ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer for Physics chapter 8 (Waves)

ECAT Pre General Science Physics Chapter 8 Test

ECAT Pre General Science Physics Chapter 8 Waves Online Test

ECAT Pre General Science Physics Chapter 8 Waves Online Test

A heavily damped system has a fairly

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

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

The natural frequency of a pendulum which is vibrating freely, depends upon its

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

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

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Time period of simple pendulum is independent of

The number of vibrating body at any instant from its equilibrium position is called

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

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

Ultra-violet rays differ from X-rays in that they

The velocity of sound is greatest in

Which waves are used in sonography?

Which of the following does not exhibit S.H.M?

Smaller the damping, greater will be the

A swing has

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

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

The distance covered by the wave in one second is:

Waves transport energy

SI unit of frequency is

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

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

Which of the following is the longitudinal waves?

Of the following, the option ______ reminds of longitudinal waves.

Fluids can transmit:

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

When an oscillatory motion repeats itself, then this type of motion is called

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