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 physical system under going forced vibrations is known as

Question # 2

The example of mechanical wave is

Question # 3

The total energy of spring mass system is

Question # 4

In solids, only following type/s of wave can travel:

Question # 5

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

Question # 6

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

Question # 7

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 8

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 # 9

The expression of Hook's law is

Question # 10

The waves moving from a sitar to a listener in air are

Question # 11

Transverse waves can be set up:

Question # 12

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

Question # 13

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

Question # 14

The process in which energy is dissipated from the oscillating system is known as

Question # 15

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
2 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
3 Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator
A. greater than the frequency of applied force
B. equal to the frequency of applied force
C. less than the frequency of applied force
D. all of them
4 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
5 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
6 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
7 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
8 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
9 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
10 In case of mechanical waves, we study the motion of
A. a single particle
B. collection of particle
C. any one of them
D. none of them

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