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 terms phase difference and path difference are

Question # 2

Huygen principle is used to determine

Question # 3

Two sources are said to be coherent if they have

Question # 4

Light waves are

Question # 5

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

Question # 6

Wavelength of light, on the average, is given by

Question # 7

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

Question # 8

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

Question # 9

Speed of light in vacuum depends upon

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Monochromatic light means wave of

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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 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
4 Frequency of red colour as compared to that of violet colour is
A. Equal
B. Smaller
C. Greater
D. None of these
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 Electromagnetic waves transport
A. Energy only
B. Momentum only
C. Both A and B
D. None is correct
7 The terms phase difference and path difference are
A. Same
B. Different
C. Equal
D. none of these
8 The wave nature of light was proposed by
A. Newton
B. Thomas Young
C. Huygen
D. None of these
9 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
10 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

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