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

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

Question # 2

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

Question # 3

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

Question # 4

Laws of reflection and refraction can also be explained by

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Light waves are

Question # 9

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

Question # 10

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

Question # 11

Two sources are said to be coherent if they have

Question # 12

Huygen's principle states that

Question # 13

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

Question # 14

Light has

Question # 15

Monochromatic light means wave of

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 The terms phase difference and path difference are
A. Same
B. Different
C. Equal
D. none of these
2 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
3 Angle between ray of light and the corresponding wavefront is
A. 00
B. 600
C. 900
D. 1200
4 Huygen's principle states that
A. Light travels in straight line
B. Light has dual nature
C. Either of these
D. None of these
5 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
6 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
7 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
8 The wave nature of light was proposed by
A. Newton
B. Thomas Young
C. Huygen
D. None of these
9 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
10 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

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