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

The weight 'mg' of the bob is resolved into

Question # 2

The portion of the water above its mean level forms a:

Question # 3

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 4

When the bob of simple pendulum is at extreme position, its K.E. will be

Question # 5

The force which opposes the applied force producing the displacement in the spring is called

Question # 6

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

Question # 7

Shock absorber of the car is an example of

Question # 8

The velocity of sound at same temperature is maximum in

Question # 9

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

Question # 10

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

Question # 11

Which of the following is an example of a S.H.M?

Question # 12

For production of beats the two sources must have

Question # 13

The characteristic of a body executing S.H.M is that its acceleration is

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
2 If a wave can be polarized, it must be
A. An electromagnetic wave
B. A longitudinal wave
C. A progressive wave
D. A transverse wave
3 Which of the following does not exhibit S.H.M?
A. a plucked violin string
B. a mass attached to a spring
C. a train shunting between two terminals
D. a simple pendulum
4 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
5 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
D. none of them
6 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
7 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
8 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
9 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
10 Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator
A. greater than the frequency of applied force
B. equal to the frequency of applied force
C. less than the frequency of applied force
D. all of them

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