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

If the time period a simple pendulum is 2 s, its frequency would be

Question # 2

Smaller the damping, the resonance will be

Question # 3

The wave motion set up in any medium depends upon:

Question # 4

Which of the following is not mechanical wave?

Question # 5

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 6

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

Question # 7

In stationary waves

Question # 8

The velocity of sound at same temperature is maximum in

Question # 9

The example of mechanical wave is

Question # 10

A physical system under going forced vibrations is known as

Question # 11

Which one is not produced by sound waves in air?

Question # 12

A body is executing free vibrations when it oscilates

Question # 13

A heavily damped system has a fairly

Question # 14

The maximum displacement of a body on either side of its equilibrium position is called

Question # 15

Acceleration of the mass at any instant is given by

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
2 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
3 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
4 When an oscillatory motion repeats itself, then this type of motion is called
A. vibratory motion
B. constant motion
C. fixed motion
D. periodic motion
5 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them
6 When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be
A. W=Kxo
B. W=1/2Kxo
C. W=1/2Kx2o
D. W=4Kxo
7 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
8 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
9 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
10 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

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