ECAT Pre Computer Science Chapter 10 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 10 Optical Instruments

Try The MCQ's Test For ECAT Physics Chapter 10 Optical Instruments

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ECAT Physics Chapter 10 Optical Instruments

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Question # 1

When the source of light is at very large distance, the shape of wavefront is

Question # 2

In case of destructive interference of two waves, the amplitude of the resultant wave will be __________ either of the waves.

Question # 3

The appearance of colours in the soap (or oil) film results from

Question # 4

Which one of the followings can act approximately as a source of monochromatic light

Question # 5

Huygen's principle states that

Question # 6

Light waves are

Question # 7

Frequency of red colour as compared to that of violet colour is

Question # 8

Speed of light in vacuum depends upon

Question # 9

The locus of all the points in the same phase of vibration is called

Question # 10

A line which represents the direction of travel of a wave is known as

Question # 11

In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes

Question # 12

Wavelength of red colour as compared to that of violet colour is

Question # 13

In case of point source of light, shape of wavefront is

Question # 14

Light waves are

Question # 15

To observe interference of light, the condition, which must be met with is that the sources must be

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
2 In an interference pattern of Young's Double Slit (YDS) experiment
A. Bright fringes are wider than dark fringes
B. Dark fringes are wider than bright fringes
C. Both dark and bright fringes are of equal width
D. Central fringes are wider than the outer fringes
3 In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves
A. Greater than
B. Equal to
C. Smaller than
D. None of these
4 In case of destructive interference of two waves, the amplitude of the resultant wave will be __________ either of the waves.
A. Greater than
B. Smaller than
C. Equal to
D. None of these
5 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
6 Wavelength of light, on the average, is given by
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
7 The locus of all the points in the same phase of vibration is called
A. Wave pocket
B. Wavefront
C. Wave number
D. None of these
8 A line which represents the direction of travel of a wave is known as
A. Spherical wavefront
B. Locus
C. Ray
D. Either B or C
9 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
10 Electromagnetic waves transport
A. Energy only
B. Momentum only
C. Both A and B
D. None is correct

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