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

Fidelity refers to

Question # 2

The example of mechanical wave is

Question # 3

The speed of sound in a medium depends on

Question # 4

The bob of a simple pendulum is suspended by

Question # 5

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 6

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

Question # 7

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 8

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

Question # 9

Energy is not carried by

Question # 10

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

Question # 11

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 # 12

For a body executing S. H. M, its

Question # 13

SI unit of frequency is

Question # 14

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

Question # 15

Si units of time period is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
2 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
3 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
4 When a wave is travels from one place to another, it transfers:
A. Matter
B. Energy
C. Momentum
D. Both B and C
5 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
6 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
7 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
8 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
9 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
10 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above

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