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

Monochromatic light means wave of

Question # 2

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

Question # 3

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

Question # 4

Laws of reflection and refraction can also be explained by

Question # 5

Speed of light in vacuum depends upon

Question # 6

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

Question # 7

In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves

Question # 8

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

Question # 9

Huygen's principle states that

Question # 10

Huygen principle is used to determine

Question # 11

The wave nature of light was proposed by

Question # 12

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

Question # 13

Electromagnetic waves transport

Question # 14

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

Question # 15

Light waves are

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Light waves are
A. Mechanical waves
B. Electromagnetic waves
C. Any of above
D. None of above
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 Two sources are said to be coherent if they have
A. Same amplitude
B. Same wavelength
C. Definite phase relation with each other
D. None of them
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 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
6 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
7 The terms phase difference and path difference are
A. Same
B. Different
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 Wavelength of light, on the average, is given by
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
10 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

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