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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

Wavelength of light, on the average, is given by

Question # 6

Angle between ray of light and the corresponding wavefront is

Question # 7

Huygen's principle states that

Question # 8

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

Question # 9

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

Question # 10

Laws of reflection and refraction can also be explained by

Question # 11

Huygen principle is used to determine

Question # 12

Two sources are said to be coherent if they have

Question # 13

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

Question # 14

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

Question # 15

Speed of light in vacuum depends upon

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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 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
3 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
4 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
5 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
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. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
8 Light waves are
A. Mechanical waves
B. Electromagnetic waves
C. Any of above
D. None of above
9 The locus of all the points in the same phase of vibration is called
A. Wave pocket
B. Wavefront
C. Wave number
D. None of these
10 Huygen principle is used to determine
A. Speed of light
B. Location of wavefront
C. About polarized and unpolarized light
D. None of them

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