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

Angle between ray of light and the corresponding wavefront is

Question # 2

Two sources are said to be coherent if they have

Question # 3

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

Question # 4

The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Huygen principle is used to determine

Question # 9

Laws of reflection and refraction can also be explained by

Question # 10

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

Question # 11

Light waves are

Question # 12

Speed of light in vacuum depends upon

Question # 13

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

Question # 14

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

Question # 15

Light has

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Huygen's principle states that
A. Light travels in straight line
B. Light has dual nature
C. Either of these
D. None of these
2 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
3 The wave nature of light was proposed by
A. Newton
B. Thomas Young
C. Huygen
D. None of these
4 Speed of light in vacuum depends upon
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
5 Frequency of red colour as compared to that of violet colour is
A. Equal
B. Smaller
C. Greater
D. None of these
6 The terms phase difference and path difference are
A. Same
B. Different
C. Equal
D. none of these
7 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
8 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
9 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
10 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them

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