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

Which of the following is the longitudinal waves?

Question # 2

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 # 3

The restoring force always directed towards the

Question # 4

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

Question # 5

If F=0.04 N and X=4 cm then K=

Question # 6

When temperature increase, the frequency of a tuning fork

Question # 7

If the mass of the simple pendulum becomes double, its time period

Question # 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

Question # 9

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 10

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

Question # 11

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

Question # 12

The wave motion set up in any medium depends upon:

Question # 13

The vibratory or oscillatory motion of a body is

Question # 14

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

Question # 15

The waves produced in a microwave oven have frequency

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When a body moves to and fro motion, this type of motion is called
A. translatory motion
B. circular motion
C. oscillatory motion
D. all of them
2 If a simple pendulum is shifted from karachi to K-2 cliff, its time period
A. remains the same
B. decreases
C. increases
D. none of them
3 The process in which energy is dissipated from the oscillating system is known as
A. resonance
B. interference
C. diffraction
D. damping
4 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
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 In a resonance situation the amplitude of the motion may become extra ordinarily large, if
A. the driving force is large
B. the driving force is zero
C. the driving force may be feeble
D. all of them
7 Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
A. waves
B. beat
C. interference
D. resonance
8 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
9 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
10 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body

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