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

Two sources are said to be coherent if they have

Question # 2

Light waves are

Question # 3

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

Question # 4

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

Question # 5

Laws of reflection and refraction can also be explained 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

Speed of light in vacuum depends upon

Question # 8

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

Question # 9

Light waves are

Question # 10

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

Question # 11

Wavelength of light, on the average, is given by

Question # 12

The wave nature of light was proposed by

Question # 13

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

Question # 14

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

Question # 15

Angle between ray of light and the corresponding wavefront is

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
2 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
3 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
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 When the source of light is at very large distance, the shape of wavefront is
A. Spherical
B. Cylindrical
C. Plane
D. None of these
6 The wave nature of light was proposed by
A. Newton
B. Thomas Young
C. Huygen
D. None of these
7 Speed of light in vacuum depends upon
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
8 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
9 Light waves are
A. Mechanical waves
B. Electromagnetic waves
C. Any of above
D. None of above
10 Wavelength of light, on the average, is given by
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m

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