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

Question # 2

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

Question # 3

Angle between ray of light and the corresponding wavefront is

Question # 4

Wavelength of light, on the average, is given by

Question # 5

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

Question # 6

Huygen's principle states that

Question # 7

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

Question # 8

Electromagnetic waves transport

Question # 9

Light waves are

Question # 10

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

Question # 11

Light waves are

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Light has

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
2 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
3 To observe interference of light, the condition, which must be met with is that the sources must be
A. Monochromatic
B. Phase coherent
C. Both of above
D. None of above
4 Huygen principle is used to determine
A. Speed of light
B. Location of wavefront
C. About polarized and unpolarized light
D. None of them
5 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
6 In case of point source of light, shape of wavefront is
A. Spherical
B. Cylindrical
C. Plane
D. None of above
7 Which one of the followings can act approximately as a source of monochromatic light
A. Neon lamp
B. Fluorescent tube
C. Sodium lamp
D. None of these
8 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
9 The terms phase difference and path difference are
A. Same
B. Different
C. Equal
D. none of these
10 Wavelength of light, on the average, is given by
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m

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