ECAT Pre Engineering Physics Chapter 10 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 10 Optical Instruments

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 10 Optical Instruments

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Physics ECAT Pre Engineering Chapter 10 Optical Instruments

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Question # 1

Monochromatic light means wave of

Question # 2

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

Question # 3

Speed of light in vacuum depends upon

Question # 4

Light has

Question # 5

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

Question # 6

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

Question # 7

Light waves are

Question # 8

Laws of reflection and refraction can also be explained by

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

Angle between ray of light and the corresponding wavefront is

Question # 14

Electromagnetic waves transport

Question # 15

Huygen principle is used to determine

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Angle between ray of light and the corresponding wavefront is
A. 00
B. 600
C. 900
D. 1200
4 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
5 Electromagnetic waves transport
A. Energy only
B. Momentum only
C. Both A and B
D. None is correct
6 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
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 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 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
10 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

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