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

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

Question # 2

Huygen principle is used to determine

Question # 3

Huygen's principle states that

Question # 4

Laws of reflection and refraction can also be explained by

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

In case of point source of light, shape of wavefront is

Question # 9

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

Question # 10

Light has

Question # 11

Light waves are

Question # 12

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

Question # 13

Electromagnetic waves transport

Question # 14

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

Question # 15

Speed of light in vacuum depends upon

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 The locus of all the points in the same phase of vibration is called
A. Wave pocket
B. Wavefront
C. Wave number
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 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
4 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
5 Frequency of red colour as compared to that of violet colour is
A. Equal
B. Smaller
C. Greater
D. None of these
6 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
7 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
8 Wavelength of red colour as compared to that of violet colour is
A. Smaller
B. Longer
C. Equal
D. None of these
9 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
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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