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

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

Question # 2

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

Question # 3

Speed of light in vacuum depends upon

Question # 4

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

Question # 5

The wave nature of light was proposed by

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Angle between ray of light and the corresponding wavefront is

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Laws of reflection and refraction can also be explained by

Question # 15

In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 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
4 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
5 In case of point source of light, shape of wavefront is
A. Spherical
B. Cylindrical
C. Plane
D. None of above
6 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
7 Light waves are
A. Mechanical waves
B. Electromagnetic waves
C. Any of above
D. None of above
8 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
9 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
10 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

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