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 terms phase difference and path difference are

Question # 2

Laws of reflection and refraction can also be explained by

Question # 3

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

Question # 4

Light waves are

Question # 5

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

Question # 6

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

Question # 7

Monochromatic light means wave of

Question # 8

Two sources are said to be coherent if they have

Question # 9

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

Question # 10

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

Question # 11

Huygen principle is used to determine

Question # 12

Angle between ray of light and the corresponding wavefront is

Question # 13

Light waves are

Question # 14

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

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 Speed of light in vacuum depends upon
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
2 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
3 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
4 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
5 Electromagnetic waves transport
A. Energy only
B. Momentum only
C. Both A and B
D. None is correct
6 Light waves are
A. Mechanical waves
B. Electromagnetic waves
C. Any of above
D. None of above
7 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
8 The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself
A. Equal to
B. Greater than
C. Smaller than
D. None of these
9 Huygen principle is used to determine
A. Speed of light
B. Location of wavefront
C. About polarized and unpolarized light
D. None of them
10 Laws of reflection and refraction can also be explained by
A. Particle nature of light
B. Quantum nature of light
C. Wave nature of light
D. Complex nature of light

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