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

Angle between ray of light and the corresponding wavefront 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

Speed of light in vacuum depends upon

Question # 4

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

Question # 5

Two sources are said to be coherent if they have

Question # 6

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

Question # 7

Laws of reflection and refraction can also be explained by

Question # 8

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

Question # 9

The terms phase difference and path difference are

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Light waves are

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Huygen principle is used to determine
A. Speed of light
B. Location of wavefront
C. About polarized and unpolarized light
D. None of them
2 In case of destructive interference of two waves, the amplitude of the resultant wave will be __________ either of the waves.
A. Greater than
B. Smaller than
C. Equal to
D. None of these
3 In case of point source of light, shape of wavefront is
A. Spherical
B. Cylindrical
C. Plane
D. None of above
4 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
5 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
6 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
7 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
8 In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves
A. Greater than
B. Equal to
C. Smaller than
D. None of these
9 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
10 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

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