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

When two waves with same frequency and constant phase difference phase difference interfere

Question # 2

Which of the following is the longitudinal waves?

Question # 3

Which one of the following wave motions is transverse:

Question # 4

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 # 5

Which of the following is not mechanical wave?

Question # 6

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 7

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

Question # 8

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

Question # 9

The portion of the water above its mean level forms a:

Question # 10

Sound waves in air always

Question # 11

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 12

Decibel is unit of

Question # 13

The velocity of sound in air not effected by changes in

Question # 14

The time required to complete on vibration is called

Question # 15

For a body executing S. H. M, its

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 An object undergoes S.H.M has maximum acceleration when its displacement form the means position
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
2 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
3 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
4 Which one is not produced by sound waves in air?
A. Polarization
B. Diffraction
C. Refraction
D. Reflection
5 Two sources of sound are said to be coherent if
A. The produce sounds of equal intensity
B. They produce sounds of equal frequency
C. They produce sound waves vibrating with the same phase
D. They produce sound waves with zero or constant phase difference all instant of time
6 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
7 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
8 A second's pendulum is a pendulum whose time period is
A. 1 second
B. 2 seconds
C. 3 seconds
D. 4 seconds
9 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
10 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

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