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

Question # 1

The distance covered by the wave during one period is called its:

Wave number A
Frequency B
Wavelength C
Time period D

Question # 2

The time period of pendulums of different lengths would be

same A
different B
both of them C
none of them D

Question # 3

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 # 4

The frequency of free vibrations is known as

free frequency A
forced frequency B
natural frequency C
un-natural frequency D

Question # 5

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

diffraction A
beat B
interference C
resonance D

Question # 6

When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be

W=Kx_o A
W=1/2Kx_o B
W=1/2Kx²_o C
W=4Kx_o D

Question # 7

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 # 8

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

equal to the resonant frequency A
slight different from the resonant frequency B
greatly different from the resonant frequency C
any one of them D

Question # 9

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 # 10

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Longitudinal wave A
Transverse wave B
No vibration at all C
None of them D

Question # 11

The total energy of spring mass system is

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

Question # 12

Smaller the damping, greater will be the

frequency A
wavelength B
amplitude C
none of them D

Question # 13

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 # 14

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

resonance A
force oscillations B
large oscillations C
damped oscillations D

Question # 15

Which of the following medium/media can transmit both transverse and longitudinal waves:

Solids A
Liquids B
Gases C
All of them D

Question # 16

The wave motion set up in any medium depends upon:

Elasticity A
Inertia B
Density C
All of these D

Question # 17

Transverse waves can be set up:

Solids A
Liquids B
Gases C
All of them D

Question # 18

Smaller the damping, the resonance will be

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

Question # 19

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 # 20

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

Velocity A
Frequency B
Wavelength C
All the above D

Question # 21

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 # 22

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 # 23

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

greater than the frequency of applied force A
equal to the frequency of applied force B
less than the frequency of applied force C
all of them D

Question # 24

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 # 25

A simple pendulum consists of a

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

Question # 26

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Mechanical waves A
Electromagnetic waves B
Matter waves C
All of them D

Question # 27

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 # 28

The phase determines the

displacement A
amplitude B
frequency C
state of motion of vibrating body D

Question # 29

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

Question # 30

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

displacement A
frequency B
amplitude C
time period D

Sr.#	Question	Answer
1	When the bob of simple pendulum is at extreme position, its K.E. will be	A. maximum B. minimum C. zero D. all of them
2	The process in which energy is dissipated from the oscillating system is known as	A. resonance B. interference C. diffraction D. damping
3	When a body is performing S.H.M., its acceleration is	A. inversely proportional to the displacement B. directly proportional to the applied force C. directly proportional to the amplitude D. directly proportional to the displacement but in opposite direction
4	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
5	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
6	Time period of simple pendulum is independent of	A. length B. mass C. acceleration due to gravity D. none of them
7	The phase determines the	A. displacement B. amplitude C. frequency D. state of motion of vibrating body
8	For production of beats the two sources must have	A. Different frequencies and same amplitude B. Different frequencies C. Different frequencies, same amplitude and same phase D. Different frequencies and same phase
9	The natural frequency of a pendulum which is vibrating freely, depends upon its	A. mass B. length C. material D. all of them
10	In case of mechanical waves, we study the motion of	A. a single particle B. collection of particle C. any one 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

The distance covered by the wave during one period is called its:

The time period of pendulums of different lengths would be

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

The frequency of free vibrations is known as

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

When temperature increase, the frequency of a tuning fork

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

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

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

The total energy of spring mass system is

Smaller the damping, greater will be the

Which type of wave can be set up in solids

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

Which of the following medium/media can transmit both transverse and longitudinal waves:

The wave motion set up in any medium depends upon:

Transverse waves can be set up:

Smaller the damping, the resonance will be

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

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

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

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

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

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

A simple pendulum consists of a

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

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

The phase determines the

The principle of superposition states that

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

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When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be