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

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 # 2

SI unit of wave length is:

Question # 3

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

Question # 4

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

Question # 5

The time period of pendulums of different lengths would be

Question # 6

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

Question # 7

The characteristic of a body executing S.H.M is that its acceleration is

Question # 8

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

Question # 9

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

Question # 10

The instantaneous velocity of a body moving along a circle is directed

Question # 11

Which type of wave can be set up in solids

Question # 12

Crests and troughs are formed in:

Question # 13

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

Question # 14

Waves transport energy

Question # 15

When an oscillatory motion repeats itself, then this type of motion is called

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
2 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
3 When the bob of simple pendulum is at mean position, its K.E will be
A. maximum
B. minimum
C. zero
D. all of them
4 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
5 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
6 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
7 A physical system under going forced vibrations is known as
A. Simple harmonic oscillator
B. Compound harmonic oscillator
C. Physical harmonic oscillator
D. driven harmonic oscillator
8 If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
A. Increasing by a factor of 2
B. Decreasing by a factor of 2
C. Decreasing by a factor of 4
D. Unchanged
9 A wave, which transfer energy by moving away from the source of disturbance is called a
A. progressive wave
B. travelling wave
C. both of them
D. none of them
10 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec

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