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

Question # 1

Which of the following is not mechanical wave?

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

Question # 2

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 # 3

A physical system under going forced vibrations is known as

Simple harmonic oscillator A
Compound harmonic oscillator B
Physical harmonic oscillator C
driven harmonic oscillator D

Question # 4

The total energy of spring mass system is

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

Question # 5

The wave form of S.H.M will be

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

Question # 6

Example of progressive wave is

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

Question # 7

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

Question # 8

transverse wave motion is possible in:

Air A
A mixture of NH₃and O₂ B
Strings C
All of these D

Question # 9

Acceleration of the mass at any instant is given by

a=k/m x A
a= - m/k x B
a = - k/m x C
a=m/k x D

Question # 10

In solids, only following type/s of wave can travel:

Transverse A
Longitudinal B
Both A and B C
None of them D

Question # 11

Energy is not carried by

Transverse progressive waves A
Longitudinal vibration B
Stationary waves C
Electromagnetic D

Question # 12

Time period of simple pendulum is independent of

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

Question # 13

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

waves A
beat B
interference C
resonance D

Question # 14

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

mass A
length B
material C
all of them D

Question # 15

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

Interference A
Refraction B
Polarization C
Reflection D

Question # 16

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

Compression A
Elasticity B
Node C
Rarefaction D

Question # 17

Which of the following is the longitudinal waves?

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

Question # 18

The speed of sound in a medium depends on

The elastic property but not on the inertia property A
The inertia property but not on the elastic property B
The elastic property as well as the inertia property C
Neither the elastic property nor the inertia property D

Question # 19

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Increasing by a factor of 2 A
Decreasing by a factor of 2 B
Decreasing by a factor of 4 C
Unchanged D

Question # 20

A simple pendulum consists of a

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

Question # 21

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 # 22

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 # 23

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 # 24

The temperature at which the speed of sound becomes double as was at 27°C is

273°C A
0°C B
927°C C
1027°C D

Question # 25

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 # 26

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

2 m A
1 m B
0.5 m C
4 m D

Question # 27

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

Matter A
Energy B
Momentum C
Both B and C D

Question # 28

While describing the motion of a simple pendulum, the frictional effects are

taken into account A
completely ignored B
partially ignored C
none of them D

Question # 29

Which one of the following is an example of resonance

swing A
tuning a radio B
microwave oven C
all of them D

Question # 30

The principle of superposition states that

The total displacement due to several waves is the sum of the displacement due to those waves acting individually A
Two stationary waves superimpose to give two progressive waves B
A diffraction pattern consists of many interference patterns superimposed on one another C
Two progressive waves superimpose to give a stationary wave D

Sr.#	Question	Answer
1	Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as	A. waves B. beat C. interference D. resonance
2	The restoring force always directed towards the	A. extreme position B. mean position C. both of them D. none of them
3	If a wave can be polarized, it must be	A. An electromagnetic wave B. A longitudinal wave C. A progressive wave D. A transverse wave
4	If a simple pendulum is shifted from karachi to K-2 cliff, its time period	A. remains the same B. decreases C. increases D. none of them
5	The process in which energy is dissipated from the oscillating system is known as	A. resonance B. interference C. diffraction D. damping
6	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
7	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
8	The distance covered by the wave in one second is:	A. Wave number B. Wave length C. Frequency D. Wave speed
9	In a resonance situation the amplitude of the motion may become extra ordinarily large, if	A. the driving force is large B. the driving force is zero C. the driving force may be feeble D. all of them
10	When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:	A. Longitudinal waves B. Transverse waves C. Water waves D. Complex waves

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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

Which of the following is not mechanical wave?

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

A physical system under going forced vibrations is known as

The total energy of spring mass system is

The wave form of S.H.M will be

Example of progressive wave is

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

transverse wave motion is possible in:

Acceleration of the mass at any instant is given by

In solids, only following type/s of wave can travel:

Energy is not carried by

Time period of simple pendulum is independent of

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

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

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

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

Which of the following is the longitudinal waves?

The speed of sound in a medium depends on

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

A simple pendulum consists of a

Which one of the following wave motions is transverse:

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

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

The temperature at which the speed of sound becomes double as was at 27°C is

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

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

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

While describing the motion of a simple pendulum, the frictional effects are

Which one of the following is an example of resonance

The principle of superposition states that

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