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

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 2

Angular frequency 'w' is basically a characteristics of

Question # 3

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 4

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 5

If we increase the length of a simple pendulum four times, its time period will become

Question # 6

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

Question # 7

Which of the following does not exhibit S.H.M?

Question # 8

The wave motion set up in any medium depends upon:

Question # 9

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 10

Which one of the following elasticizes is possessed by fluids:

Question # 11

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

Question # 12

Crests and troughs are formed in:

Question # 13

Smaller the damping, the resonance will be

Question # 14

Which waves are used in sonography?

Question # 15

The natural frequency of a pendulum which is vibrating freely, depends upon its

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
2 The process in which energy is dissipated from the oscillating system is known as
A. resonance
B. interference
C. diffraction
D. damping
3 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
4 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
5 Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:
A. Rope
B. Coil of spring
C. Water
D. All of them
6 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
7 The temperature at which the speed of sound becomes double as was at 27°C is
A. 273°C
B. 0°C
C. 927°C
D. 1027°C
8 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
9 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
10 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz

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