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

Laws of reflection and refraction can also be explained by

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Electromagnetic waves transport

Question # 7

Wavelength of light, on the average, is given by

Question # 8

Light waves are

Question # 9

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

Question # 10

Angle between ray of light and the corresponding wavefront is

Question # 11

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

Question # 12

Huygen principle is used to determine

Question # 13

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

Question # 14

The terms phase difference and path difference are

Question # 15

Monochromatic light means wave of

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Sr.# Question Answer
1 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
2 Huygen's principle states that
A. Light travels in straight line
B. Light has dual nature
C. Either of these
D. None of these
3 Speed of light in vacuum depends upon
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
4 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
5 The wave nature of light was proposed by
A. Newton
B. Thomas Young
C. Huygen
D. None of these
6 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
7 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
8 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
9 Huygen principle is used to determine
A. Speed of light
B. Location of wavefront
C. About polarized and unpolarized light
D. None of them
10 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

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