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

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

Question # 2

Huygen's principle states that

Question # 3

In an interference pattern of Young's Double Slit (YDS) experiment

Question # 4

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

Question # 5

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

Question # 6

Huygen principle is used to determine

Question # 7

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

Question # 8

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

Question # 9

The terms phase difference and path difference are

Question # 10

The property of light which does not change with the nature of the medium is

Question # 11

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

Question # 12

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

Question # 13

Two sources are said to be coherent if they have

Question # 14

Light waves are

Question # 15

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

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Angle between ray of light and the corresponding wavefront is
A. 00
B. 600
C. 900
D. 1200
2 In case of point source of light, shape of wavefront is
A. Spherical
B. Cylindrical
C. Plane
D. None of above
3 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
4 In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes
A. Bright
B. Dark
C. Any of A or B
D. None of these
5 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
6 Wavelength of light, on the average, is given by
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
7 Wavelength of red colour as compared to that of violet colour is
A. Smaller
B. Longer
C. Equal
D. None of these
8 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
9 Frequency of red colour as compared to that of violet colour is
A. Equal
B. Smaller
C. Greater
D. None of these
10 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

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