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

Question # 1

Angular frequency 'w' is basically a characteristics of

linear motion A
circular motion B
both of them C
none of them D

Question # 2

A simple pendulum consists of a

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

Question # 3

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 # 4

The distance covered by the wave in one second is:

Wave number A
Wave length B
Frequency C
Wave speed D

Question # 5

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 # 6

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 # 7

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 # 8

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Sinusoidal shape with amplitude A/3 A
Sinusoidal shape with amplitude A/2 B
Sinusoidal shape with amplitude A C
Straight line 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

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 # 11

The waves produced in a microwave oven have wavelength.

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

Question # 12

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

resonance A
force oscillations B
large oscillations C
damped oscillations D

Question # 13

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 # 14

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 # 15

Longitudinal waves are also called:

Congressional waves A
Transverse waves B
Radio waves C
None of them D

Question # 16

Smaller the damping, the resonance will be

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

Question # 17

The total energy of spring mass system is

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

Question # 18

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

Compression A
Elasticity B
Node C
Rarefaction D

Question # 19

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 # 20

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 # 21

The expression for restoring force is

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

Question # 22

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

subsonic speed A
sonic speed B
super sonic speed C
any one of them D

Question # 23

Energy is not carried by

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

Question # 24

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 # 25

A weakly damped system has fairly

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

Question # 26

The wave form of S.H.M will be

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

Question # 27

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

e.m. waves A
mechanical waves B
sound waves C
water waves D

Question # 28

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 # 29

The damping depends upon the

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

Question # 30

Fluids can transmit:

Transverse wave A
Compressional wave B
Both of them C
None of them D

Sr.#	Question	Answer
1	The principle of superposition states that	A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually B. Two stationary waves superimpose to give two progressive waves C. A diffraction pattern consists of many interference patterns superimposed on one another D. Two progressive waves superimpose to give a stationary wave
2	The velocity of sound at same temperature is maximum in	A. H₂ B. N₂ C. O₂ D. NH₃
3	In stationary waves	A. Energy is uniformly distributed B. Energy is minimum at nodes and maximum at antinodes C. Energy is maximum at nodes and minimum at antidotes D. Alternating maximum and minimum energy producing at nodes and antinodes
4	Which one of the following wave motions is transverse:	A. Wave motion produced in water when a piece of stone is thrown into it B. Pulling of weight hanging vertically with a spiral spring C. Both of these D. None of these
5	The resonance will be sharp, if the amplitude decreases rapidly at a frequency	A. equal to the resonant frequency B. slight different from the resonant frequency C. greatly different from the resonant frequency D. any one of them
6	The total energy of spring mass system is	A. zero B. changing with time C. constant D. none of them
7	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
8	Example of progressive wave is	A. transverse waves B. longitudinal waves C. both of them D. none of them
9	The vibratory or oscillatory motion of a body is	A. translatory motion B. back and forth motion about its mean position C. free all motion D. circular motion
10	When an oscillatory motion repeats itself, then this type of motion is called	A. vibratory motion B. constant motion C. fixed motion D. periodic motion

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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