ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

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

Question # 2

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 # 3

The square of 0.4 is:

Question # 4

For a body executing S. H. M, its

Question # 5

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

Question # 6

The bob of a simple pendulum is suspended by

Question # 7

If the length of a simple pendulum is 0.25 m its time period would be

Question # 8

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

Question # 9

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

Question # 10

The principle of superposition states that

Question # 11

The example of mechanical wave is

Question # 12

In the same medium, velocity of the wave:

Question # 13

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 14

Velocity of sound in vacuum (in m/s) is

Question # 15

Which one of the following could be the frequency of ultraviolet radiation?

Question # 16

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 # 17

Two sources of sound are said to be coherent if

Question # 18

Fluids can transmit:

Question # 19

A second's pendulum is a pendulum whose time period is

Question # 20

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 21

In the resonance condition, the amplitude of the oscillator becomes

Question # 22

A swing has

Question # 23

Smaller the damping, the resonance will be

Question # 24

Which of the following is not mechanical wave?

Question # 25

transverse wave motion is possible in:

Question # 26

Which one of the following elasticizes is possessed by fluids:

Question # 27

When sound waves travel from air to water which of these remains constant?

Question # 28

Shock absorber of the car is an example of

Question # 29

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 30

Example of progressive wave is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them
2 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
3 When a wave is travels from one place to another, it transfers:
A. Matter
B. Energy
C. Momentum
D. Both B and C
4 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
5 The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
6 The square of 0.4 is:
A. Greater than 0.4
B. Smaller than 0.4
C. Equal to 0.4
D. None of them
7 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
8 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
9 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
10 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed

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