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

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

Question # 2

While describing the motion of a simple pendulum, the frictional effects are

Question # 3

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

Question # 4

The vibratory or oscillatory motion of a body is

Question # 5

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 6

A second's pendulum is a pendulum whose time period is

Question # 7

The square of 0.4 is:

Question # 8

For production of beats the two sources must have

Question # 9

If we increase the length of a simple pendulum four times, its time period will become

Question # 10

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

Question # 11

The velocity of sound in air not effected by changes in

Question # 12

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

Question # 13

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 14

In case of mechanical waves, we study the motion of

Question # 15

In the same medium, velocity of the wave:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be
A. 1 : 2
B. 4 : 1
C. 1 : 4
D. 2 : 1
2 When a body moves to and fro motion, this type of motion is called
A. translatory motion
B. circular motion
C. oscillatory motion
D. all of them
3 A traveling wave has a shape of:
A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
4 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
5 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
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
6 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them
7 The waves moving from a sitar to a listener in air are
A. Longitudinal progressive
B. Longitudinal stationary
C. Transverse progressive
D. Transverse stationary
8 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
9 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
10 Time period of simple pendulum is independent of
A. length
B. mass
C. acceleration due to gravity
D. none of them

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