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

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

Question # 2

Light waves are

Question # 3

The wave nature of light was proposed by

Question # 4

Light waves are

Question # 5

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

Question # 6

Light has

Question # 7

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

Question # 8

Electromagnetic waves transport

Question # 9

The terms phase difference and path difference are

Question # 10

The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Monochromatic light means wave of

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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 Laws of reflection and refraction can also be explained by
A. Particle nature of light
B. Quantum nature of light
C. Wave nature of light
D. Complex nature of light
3 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
4 Wavelength of light, on the average, is given by
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
5 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
6 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
7 The property of light which does not change with the nature of the medium is
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
8 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
9 When the source of light is at very large distance, the shape of wavefront is
A. Spherical
B. Cylindrical
C. Plane
D. None of these
10 Electromagnetic waves transport
A. Energy only
B. Momentum only
C. Both A and B
D. None is correct

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