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

Decibel is unit of

Question # 2

The velocity of sound at same temperature is maximum in

Question # 3

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

Question # 4

Which one of the following elasticizes is possessed by fluids:

Question # 5

Time period of a simple pendulum depends upon the

Question # 6

In compressional wave,the layer of medium having reduced pressure is called:

Question # 7

The square of 0.4 is:

Question # 8

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Question # 9

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 10

The vibratory or oscillatory motion of a body is

Question # 11

SI unit of frequency is

Question # 12

When a wave is travels from one place to another, it transfers:

Question # 13

The wave motion set up in any medium depends upon:

Question # 14

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 15

The distance covered by the wave during one period is called its:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
2 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic
3 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
4 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
5 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them
6 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times
7 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
8 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
9 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force
10 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec

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