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

Speed of light in vacuum depends upon

Question # 2

Huygen's principle states that

Question # 3

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

Question # 4

Huygen principle is used to determine

Question # 5

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

Question # 6

Two sources are said to be coherent if they have

Question # 7

The terms phase difference and path difference are

Question # 8

Laws of reflection and refraction can also be explained by

Question # 9

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

Question # 10

Light waves are

Question # 11

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

Question # 12

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

Question # 13

Light has

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Light waves are
A. Mechanical waves
B. Electromagnetic waves
C. Any of above
D. None of above
2 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
3 The terms phase difference and path difference are
A. Same
B. Different
C. Equal
D. none of these
4 Wavelength of light, on the average, is given by
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
5 In an interference pattern of Young's Double Slit (YDS) experiment
A. Bright fringes are wider than dark fringes
B. Dark fringes are wider than bright fringes
C. Both dark and bright fringes are of equal width
D. Central fringes are wider than the outer fringes
6 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
7 Speed of light in vacuum depends upon
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
8 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
9 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
10 Electromagnetic waves transport
A. Energy only
B. Momentum only
C. Both A and B
D. None is correct

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