ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

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

Question # 2

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 3

Two sources of sound are said to be coherent if

Question # 4

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

Question # 5

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 6

Time period of simple pendulum is independent of

Question # 7

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 8

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

Question # 9

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Question # 10

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

Question # 11

If a freely oscillating system is subjected to an external force, then

Question # 12

Example of progressive wave is

Question # 13

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:

Question # 14

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 15

In the resonance condition, the amplitude of the oscillator becomes

Question # 16

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 17

The vibratory or oscillatory motion of a body is

Question # 18

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

Question # 19

Longitudinal waves are also called:

Question # 20

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

Question # 21

For a body executing S. H. M, its

Question # 22

The total energy of spring mass system is

Question # 23

Fluids can transmit:

Question # 24

Which one of the following could be the frequency of ultraviolet radiation?

Question # 25

Fidelity refers to

Question # 26

Energy is not carried by

Question # 27

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

Question # 28

The example of mechanical wave is

Question # 29

Shock absorber of the car is an example of

Question # 30

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
2 If a wave can be polarized, it must be
A. An electromagnetic wave
B. A longitudinal wave
C. A progressive wave
D. A transverse wave
3 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
4 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
5 For transmission of both transverse and longitudinal waves, we can use:
A. Solid
B. Gas
C. Plasma
D. None of these
6 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
7 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
8 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
9 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
10 With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
A. Energy, momentum and mass
B. Energy
C. Energy and mass
D. Energy and linear momentum

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