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

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

Question # 2

The terms phase difference and path difference are

Question # 3

Light waves are

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

Wavelength of light, on the average, is given by

Question # 10

Monochromatic light means wave of

Question # 11

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

Question # 12

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

Question # 13

Electromagnetic waves transport

Question # 14

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

Question # 15

Light waves are

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ECAT Physics Chapter 10 Important MCQ's

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 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
3 Huygen principle is used to determine
A. Speed of light
B. Location of wavefront
C. About polarized and unpolarized light
D. None of them
4 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
5 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
6 Huygen's principle states that
A. Light travels in straight line
B. Light has dual nature
C. Either of these
D. None of these
7 Angle between ray of light and the corresponding wavefront is
A. 00
B. 600
C. 900
D. 1200
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 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 Wavelength of red colour as compared to that of violet colour is
A. Smaller
B. Longer
C. Equal
D. None of these

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