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

Question # 1

The expression of Hook's law is

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

Question # 2

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 # 3

The wave form of S.H.M will be

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

Question # 4

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 # 5

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 # 6

The example of mechanical wave is

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

Question # 7

Energy is not carried by

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

Question # 8

If a wave can be polarized, it must be

An electromagnetic wave A
A longitudinal wave B
A progressive wave C
A transverse wave D

Question # 9

The maximum displacement of a body on either side of its equilibrium position is called

frequency A
amplitude B
displacement C
time period D

Question # 10

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

displacement A
frequency B
amplitude C
time period D

Question # 11

Decibel is unit of

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

Question # 12

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 # 13

Fluids can transmit:

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

Question # 14

The velocity of sound in air not effected by changes in

Moisture contents in air A
Temperature of air B
The atmosphere pressure C
The composition of air D

Question # 15

The waves produced in a microwave oven have frequency

2450 Hz A
2450 K Hz B
2450 M Hz C
2450 G Hz D

Question # 16

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

Wave number A
Frequency B
Wavelength C
Time period D

Question # 17

Waves transport energy

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

Question # 18

SI unit of frequency is

second A
hertz B
revolution C
vibrations/sec D

Question # 19

Crests and troughs are formed in:

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

Question # 20

In the resonance condition, the amplitude of the oscillator becomes

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

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

Interference A
Refraction B
Polarization C
Reflection D

Question # 23

SI unit of wave length is:

Kilometer A
Metre B
Centimetre C
Hertz D

Question # 24

Which one is not produced by sound waves in air?

Polarization A
Diffraction B
Refraction C
Reflection D

Question # 25

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 # 26

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 # 27

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 # 28

The total energy of spring mass system is

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

Question # 29

Which of the following changes at an antinode in a stationary wave?

Density only A
Pressure only B
Both pressure and density C
Neither pressure nor density D

Question # 30

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

Sr.#	Question	Answer
1	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
2	Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?	A. 10³ B. 10⁶ C. 10⁹ D. 10¹²
3	Which one of the following elasticizes is possessed by fluids:	A. Young's elastic modulus (length) B. Bulk elastic modulus (volume) C. Modulus of rigidity (shape) D. None of these
4	The velocity of sound in air not effected by changes in	A. Moisture contents in air B. Temperature of air C. The atmosphere pressure D. The composition of air
5	Smaller the damping, greater will be the	A. frequency B. wavelength C. amplitude D. none of them
6	The number of vibrating body at any instant from its equilibrium position is called	A. displacement B. frequency C. amplitude D. time period
7	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
8	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
9	Of the following, the option ______ reminds of longitudinal waves.	A. Sound waves B. Heat waves C. Electromagnetic waves D. Light waves
10	When two waves with same frequency and constant phase difference phase difference interfere	A. There is a gain of energy B. There is a loss of energy C. The energy is redistributed and the distribution changes with time D. The energy is redistributed and the distribution remains constant with time

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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