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

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Huygen principle is used to determine

Question # 9

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

Question # 10

Speed of light in vacuum depends upon

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Light has

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 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
2 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
3 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
4 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
5 Angle between ray of light and the corresponding wavefront is
A. 00
B. 600
C. 900
D. 1200
6 Speed of light in vacuum depends upon
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
7 Huygen's principle states that
A. Light travels in straight line
B. Light has dual nature
C. Either of these
D. None of these
8 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
9 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
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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