ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

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

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ECAT Physics Chapter 8 Waves

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Question # 1

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 2

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

Question # 3

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

Question # 4

Decibel is unit of

Question # 5

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 6

The square of 0.4 is:

Question # 7

In case of mechanical waves, we study the motion of

Question # 8

Velocity of sound in vacuum (in m/s) is

Question # 9

The expression for restoring force is

Question # 10

For a body executing S. H. M, its

Question # 11

The restoring force always directed towards the

Question # 12

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Question # 13

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

Question # 14

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:
A. Rope
B. Coil of spring
C. Water
D. All of them
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 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
4 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
5 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
6 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
7 It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall
8 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
9 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
10 Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at
A. subsonic speed
B. sonic speed
C. super sonic speed
D. any one of them

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