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

Speed of light in vacuum depends upon

Question # 3

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

Question # 4

Angle between ray of light and the corresponding wavefront is

Question # 5

Huygen's principle states that

Question # 6

Two sources are said to be coherent if they have

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Light waves are

Question # 11

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

Question # 12

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

Question # 13

Wavelength of light, on the average, is given by

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
2 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
3 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
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 terms phase difference and path difference are
A. Same
B. Different
C. Equal
D. none of these
6 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
7 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
8 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
9 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
10 Huygen principle is used to determine
A. Speed of light
B. Location of wavefront
C. About polarized and unpolarized light
D. None of them

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