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

Question # 1

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

frequency of S.H.M A
period of S.H.M B
wave form C
none of them D

Question # 2

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

Compression A
Elasticity B
Node C
Rarefaction D

Question # 3

The wave form of S.H.M will be

square wave A
sine wave B
rectified wave C
saw-tooth wave D

Question # 4

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

45° A
90° B
135° C
180° D

Question # 5

A body is executing free vibrations when it oscilates

with the interference of an external force A
without the interference of an external force B
with the interference of an internal force C
none of them D

Question # 6

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 # 7

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

1 MHz A
10 Hz B
1 GHz C
100000 Hz D

Question # 8

The portion of the water above its mean level forms a:

Crest A
Trough B
Both A and B C
None of these D

Question # 9

The expression of Hook's law is

F=ma A
F=kx B
F= -kx C
-kx=ma D

Question # 10

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

kg A
kg-meter B
kg/meter C
Meter/kg D

Question # 11

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

its weight A
tension in the string B
viscous drag force by air C
all of them D

Question # 12

If a wave can be polarized, it must be

An electromagnetic wave A
A longitudinal wave B
A progressive wave C
A transverse wave D

Question # 13

If the time period a simple pendulum is 2 s, its frequency would be

2 Hz A
1.5 Hz B
1.0 Hz C
0.5 Hz D

Question # 14

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

2 times A
3 times B
4 times C
6 times D

Question # 15

A simple pendulum consists of a

small light bob A
small heavy bob B
big light bob C
big heavy bob D

Question # 16

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

progressive wave A
travelling wave B
both of them C
none of them D

Question # 17

Two sources of sound are said to be coherent if

The produce sounds of equal intensity A
They produce sounds of equal frequency B
They produce sound waves vibrating with the same phase C
They produce sound waves with zero or constant phase difference all instant of time D

Question # 18

Laplace formula is derived from

Isothermal change A
Adiabatic change B
Isobaric change C
None of these D

Question # 19

Smaller the damping, greater will be the

frequency A
wavelength B
amplitude C
none of them D

Question # 20

The waves which propagate through the oscillations of material particles are known as:

Mechanical waves A
Electromagnetic waves B
Any of them C
None of them D

Question # 21

The restoring force always directed towards the

extreme position A
mean position B
both of them C
none of them D

Question # 22

When a mass 'm' is pulled slowly, the spring stretches by an amount x₀,then the average force would be

F= Kx₀ A
F=1/2Kx₀ B
F=2Kx₀ C
F=4Kx₀ D

Question # 23

When a body is performing S.H.M., its acceleration is

inversely proportional to the displacement A
directly proportional to the applied force B
directly proportional to the amplitude C
directly proportional to the displacement but in opposite direction D

Question # 24

The total energy of spring mass system is

zero A
changing with time B
constant C
none of them D

Question # 25

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

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

Question # 26

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:

Stationary waves A
Transverse waves B
Both of these C
None of these D

Question # 27

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

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

Question # 28

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

Matter A
Energy B
Momentum C
Both B and C D

Question # 29

Which waves are used in sonography?

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

Question # 30

The waves produced in a microwave oven have wavelength.

12 mm A
12 cm B
12 m C
12 mm D

Sr.#	Question	Answer
1	Which of the following is an example of a S.H.M?	A. motion of a projectile B. motion of a train along a circular path C. motion of swing D. electrons revolving sound the nucleus
2	In solids, only following type/s of wave can travel:	A. Transverse B. Longitudinal C. Both A and B D. None of them
3	If we increase the length of a simple pendulum four times, its time period will become	A. 2 times B. 3 times C. 4 times D. 6 times
4	The wave form of S.H.M will be	A. square wave B. sine wave C. rectified wave D. saw-tooth wave
5	The bob of a simple pendulum is suspended by	A. string B. heavy inextensible string C. light extensible string D. light inextensible string
6	The natural frequency of a pendulum which is vibrating freely, depends upon its	A. mass B. length C. material D. all of them
7	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
8	What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?	A. 1 MHz B. 10 Hz C. 1 GHz D. 100000 Hz
9	Time period of a simple pendulum depends upon the	A. length of the pendulum B. acceleration due to gravity C. none of them D. both of them
10	The maximum displacement of a body on either side of its equilibrium position is called	A. frequency B. amplitude C. displacement D. time period

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ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

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

ECAT Pre General Science Physics Chapter 8 Waves

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

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

The wave form of S.H.M will be

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

A body is executing free vibrations when it oscilates

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

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

The portion of the water above its mean level forms a:

The expression of Hook's law is

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

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

If a wave can be polarized, it must be

If the time period a simple pendulum is 2 s, its frequency would be

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

A simple pendulum consists of a

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

Two sources of sound are said to be coherent if

Laplace formula is derived from

Smaller the damping, greater will be the

The waves which propagate through the oscillations of material particles are known as:

The restoring force always directed towards the

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

When a body is performing S.H.M., its acceleration is

The total energy of spring mass system is

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

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:

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

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

Which waves are used in sonography?

The waves produced in a microwave oven have wavelength.

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When a mass 'm' is pulled slowly, the spring stretches by an amount x₀,then the average force would be