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

SI unit of frequency is

Question # 2

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

Question # 3

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

Question # 4

For production of beats the two sources must have

Question # 5

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 6

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

Question # 7

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 8

The waves which propagate through the oscillations of material particles are known as:

Question # 9

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

Question # 10

Sound waves in air always

Question # 11

The velocity of sound in air depends upon

Question # 12

Example of vibratory motion is

Question # 13

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 14

Which waves are used in sonography?

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
2 As the bob of the pendulum moves to and fro which of the force is experienced by the bob
A. its weight
B. tension in the string
C. viscous drag force by air
D. all of them
3 Which of the following is an example of a S.H.M?
A. motion of a projectile
B. motion of a train along a circular path
C. motion of swing
D. electrons revolving sound the nucleus
4 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:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
5 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
6 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
7 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz
8 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
9 The resonance will be sharp, if the amplitude decreases rapidly at a frequency
A. equal to the resonant frequency
B. slight different from the resonant frequency
C. greatly different from the resonant frequency
D. any one of them
10 In case of mechanical waves, we study the motion of
A. a single particle
B. collection of particle
C. any one of them
D. none of them

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