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

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

Question # 2

Light waves are

Question # 3

Laws of reflection and refraction can also be explained by

Question # 4

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

Question # 5

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

Question # 6

Monochromatic light means wave of

Question # 7

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

Question # 8

Light has

Question # 9

Angle between ray of light and the corresponding wavefront is

Question # 10

Wavelength of light, on the average, is given by

Question # 11

The terms phase difference and path difference are

Question # 12

The wave nature of light was proposed by

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 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
2 The wave nature of light was proposed by
A. Newton
B. Thomas Young
C. Huygen
D. None of these
3 The terms phase difference and path difference are
A. Same
B. Different
C. Equal
D. none of these
4 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
5 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
6 Speed of light in vacuum depends upon
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
7 Light waves are
A. Mechanical waves
B. Electromagnetic waves
C. Any of above
D. None of above
8 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
9 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
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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