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

Question # 1

If F=0.04 N and X=4 cm then K=

1 Nm^-1 A
2 Nm^-1 B
3 Nm^-1 C
4 Nm^-1 D

Question # 2

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 # 3

When a body moves to and fro motion, this type of motion is called

translatory motion A
circular motion B
oscillatory motion C
all of them D

Question # 4

When two waves with same frequency and constant phase difference phase difference interfere

There is a gain of energy A
There is a loss of energy B
The energy is redistributed and the distribution changes with time C
The energy is redistributed and the distribution remains constant with time D

Question # 5

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 # 6

The characteristic of a body executing S.H.M is that its acceleration is

inversely proportional to displacement A
directly proportional to displacement B
independent of displacement C
equal to zero D

Question # 7

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 # 8

A traveling wave has a shape of:

Square wave A
Sine wave B
Parabola C
hyperbola D

Question # 9

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

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

Question # 10

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 # 11

The vibratory or oscillatory motion of a body is

translatory motion A
back and forth motion about its mean position B
free all motion C
circular motion D

Question # 12

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 # 13

A heavily damped system has a fairly

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

Question # 14

In transverse waves, the individual particles of the medium move:

In circles A
Perpendicular to the direction of level B
Parallel to the direction of level C
None of these D

Question # 15

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 # 16

The velocity of sound is greatest in

Water A
Air B
Vacuum C
Metal D

Question # 17

Decibel is unit of

Intensity of light A
x-ray radiation capacity B
sound loudness C
Energy of radiation D

Question # 18

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 # 19

There is no net transfer of energy by particle of medium in

Longitudinal wave A
Transverse wave B
Progressive wave C
Stationary wave D

Question # 20

Waves transport energy

without transport energy A
with matter B
both of them C
none of them D

Question # 21

The total energy of spring mass system is

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

Question # 22

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 # 23

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

maximum A
minimum B
zero C
all of them D

Question # 24

The velocity of sound in air depends upon

Density and elasticity of gas A
Pressure B
Wavelength C
Amplitude and frequency of sound D

Question # 25

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 # 26

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

Interference A
Refraction B
Polarization C
Reflection D

Question # 27

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 # 28

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

displacement A
frequency B
amplitude C
time period D

Question # 29

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 # 30

SI unit of wave length is:

Kilometer A
Metre B
Centimetre C
Hertz D

Sr.#	Question	Answer
1	The velocity of sound is greatest in	A. Water B. Air C. Vacuum D. Metal
2	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
3	Decibel is unit of	A. Intensity of light B. x-ray radiation capacity C. sound loudness D. Energy of radiation
4	At 'resonance' the transfer of energy from deriving source to the oscillator is	A. maximum B. minimum C. zero D. none of them
5	If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get	A. diffraction B. beat C. interference D. resonance
6	When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be	A. 45° B. 90° C. 135° D. 180°
7	The waves in which the particles of the medium have displacement along the direction of propagation of waves are called	A. longitudinal waves B. transverse waves C. non-mechanical waves D. none of them
8	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
9	Longitudinal waves are also called:	A. Congressional waves B. Transverse waves C. Radio waves D. None of them
10	When sound waves travel from air to water which of these remains constant?	A. Velocity B. Frequency C. Wavelength D. All the above

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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