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

Question # 1

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

very small energy A
very large energy B
frictional forces C
acceleration due to gravity D

Question # 2

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

Matter A
Energy B
Momentum C
Both B and C D

Question # 3

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 # 4

The example of mechanical wave is

waves in ropes A
waves on water surface B
waves in air C
all of them D

Question # 5

Which of the following is an example of a S.H.M?

motion of a projectile A
motion of a train along a circular path B
motion of swing C
electrons revolving sound the nucleus D

Question # 6

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 # 7

Smaller the damping, the resonance will be

more flat A
more sharp B
both of them C
none of them D

Question # 8

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 # 9

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?

100 ms^-1 A
200 ms^-1 B
450 ms^-1 C
900 ms^-1 D

Question # 10

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 # 11

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 # 12

The time required to complete on vibration is called

frequency A
total time B
time period C
velocity D

Question # 13

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 # 14

Energy is not carried by

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

Question # 15

The damping depends upon the

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

Question # 16

Which one of the following elasticizes is possessed by fluids:

Young's elastic modulus (length) A
Bulk elastic modulus (volume) B
Modulus of rigidity (shape) C
None of these D

Question # 17

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 # 18

Such oscillations in which the amplitude decreases steadily with time, are called

resonance A
force oscillations B
large oscillations C
damped oscillations D

Question # 19

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 # 20

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

400 m/sec A
40 m/sec B
430 m/sec C
300 m/sec D

Question # 21

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 # 22

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 # 23

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 # 24

Time period of a simple pendulum depends upon the

length of the pendulum A
acceleration due to gravity B
none of them C
both of them D

Question # 25

In the resonance condition, the amplitude of the oscillator becomes

very large A
very small B
zero C
any one of them D

Question # 26

If the length of a simple pendulum is 0.25 m its time period would be

1.0 s A
2.0 s B
3.0 s C
4.0 s D

Question # 27

SI unit of frequency is

second A
hertz B
revolution C
vibrations/sec D

Question # 28

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

increase A
decreases B
remains constant C
none of them D

Question # 29

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 # 30

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

Sr.#	Question	Answer
1	The total energy of spring mass system is	A. zero B. changing with time C. constant D. none of them
2	The waves which propagate by the collision of material particles are known as	A. e.m. waves B. mechanical waves C. light waves D. microwaves
3	If the length of second pendulum becomes four times then its time period will become	A. Four time B. Two times C. Six times D. Eight times
4	The damping depends upon the	A. amplitude B. sharpness C. both of them D. none of them
5	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
6	A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:	A. Longitudinal wave B. Transverse wave C. No vibration at all D. None of them
7	A swing has	A. one natural frequency B. two natural frequencies C. three natural frequencies D. four natural frequencies
8	Laplace formula is derived from	A. Isothermal change B. Adiabatic change C. Isobaric change D. None of these
9	Acceleration of the mass at any instant is given by	A. a=k/m x B. a= - m/k x C. a = - k/m x D. a=m/k x
10	Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?	A. 400 m/sec B. 40 m/sec C. 430 m/sec D. 300 m/sec

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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