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

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 2

Example of vibratory motion is

Question # 3

Si units of time period is

Question # 4

While describing the motion of a simple pendulum, the frictional effects are

Question # 5

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 6

The frequency of free vibrations is known as

Question # 7

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

Question # 8

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:

Question # 9

SI unit of wave length is:

Question # 10

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 11

Which of the following is not mechanical wave?

Question # 12

Time period of a simple pendulum depends upon the

Question # 13

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

Question # 14

Acceleration of the mass at any instant is given by

Question # 15

Which waves are used in sonography?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
2 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
3 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them
4 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
5 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
6 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
7 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
8 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
9 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?
A. 103
B. 106
C. 109
D. 1012
10 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

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