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

Question # 1

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Energy, momentum and mass A
Energy B
Energy and mass C
Energy and linear momentum D

Question # 2

Crests and troughs are formed in:

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

Question # 3

When the bob of simple pendulum is at extreme position, its K.E. will be

maximum A
minimum B
zero C
all of them D

Question # 4

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 # 5

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

Matter A
Energy B
Momentum C
Both B and C D

Question # 6

The velocity of sound in air not effected by changes in

Moisture contents in air A
Temperature of air B
The atmosphere pressure C
The composition of air D

Question # 7

Which of the following is not mechanical wave?

Sound wave A
Light wave B
wave produced in spring
C
None of them D

Question # 8

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 # 9

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

applied force A
momentum B
restoring force C
none of them D

Question # 10

Which type of wave can be set up in solids

longitudinal waves A
transverse waves B
both of them C
none of them D

Question # 11

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

free vibration A
natural vibrations B
forced vibrations C
all of them D

Question # 12

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 # 13

A weakly damped system has fairly

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

Question # 14

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

remains the same A
decreases B
increases C
none of them D

Question # 15

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 # 16

When sound waves travel from air to water which of these remains constant?

Velocity A
Frequency B
Wavelength C
All the above D

Question # 17

Which one of the following wave motions is transverse:

Wave motion produced in water when a piece of stone is thrown into it A
Pulling of weight hanging vertically with a spiral spring B
Both of these C
None of these D

Question # 18

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

the driving force is large A
the driving force is zero B
the driving force may be feeble C
all of them D

Question # 19

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 # 20

For production of beats the two sources must have

Different frequencies and same amplitude A
Different frequencies B
Different frequencies, same amplitude and same phase C
Different frequencies and same phase D

Question # 21

SI unit of frequency is

second A
hertz B
revolution C
vibrations/sec D

Question # 22

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

Compression A
Elasticity B
Node C
Rarefaction D

Question # 23

A swing has

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

Question # 24

The damping depends upon the

amplitude A
sharpness B
both of them C
none of them D

Question # 25

Through which character we can distinguish the light waves from sound waves

Interference A
Refraction B
Polarization C
Reflection D

Question # 26

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

1 : 2 A
4 : 1 B
1 : 4 C
2 : 1 D

Question # 27

The waves which propagate by the collision of material particles are known as

e.m. waves A
mechanical waves B
light waves C
microwaves D

Question # 28

When temperature increase, the frequency of a tuning fork

Increases A
Decreases B
Remains same C
Increase or decreases depending on the material D

Question # 29

If the length of second pendulum becomes four times then its time period will become

Four time A
Two times B
Six times C
Eight times D

Question # 30

A traveling wave has a shape of:

Square wave A
Sine wave B
Parabola C
hyperbola D

Sr.#	Question	Answer
1	SI unit of frequency is	A. second B. hertz C. revolution D. vibrations/sec
2	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
3	Which one is not produced by sound waves in air?	A. Polarization B. Diffraction C. Refraction D. Reflection
4	When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to	A. applied force B. momentum C. restoring force D. none of them
5	Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of	A. very small energy B. very large energy C. frictional forces D. acceleration due to gravity
6	Longitudinal waves are also called:	A. Congressional waves B. Transverse waves C. Radio waves D. None of them
7	A physical system under going forced vibrations is known as	A. Simple harmonic oscillator B. Compound harmonic oscillator C. Physical harmonic oscillator D. driven harmonic oscillator
8	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
9	The total energy of spring mass system is	A. zero B. changing with time C. constant D. none of them
10	A weakly damped system has fairly	A. sharp resonance curve B. flat resonance curve C. both of them D. none of them

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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

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Crests and troughs are formed in:

When the bob of simple pendulum is at extreme position, its K.E. will be

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

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

The velocity of sound in air not effected by changes in

Which of the following is not mechanical wave?

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

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

Which type of wave can be set up in solids

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

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

A weakly damped system has fairly

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

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

When sound waves travel from air to water which of these remains constant?

Which one of the following wave motions is transverse:

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

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

For production of beats the two sources must have

SI unit of frequency is

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

A swing has

The damping depends upon the

Through which character we can distinguish the light waves from sound waves

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

The waves which propagate by the collision of material particles are known as

When temperature increase, the frequency of a tuning fork

If the length of second pendulum becomes four times then its time period will become

A traveling wave has a shape of:

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