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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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Total Questions15
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Time Allowed20
ECAT Physics Chapter 10 Optical Instruments
00:00
Question # 1
Monochromatic light means wave of
Question # 2
Laws of reflection and refraction can also be explained by
Question # 3
Two sources are said to be coherent if they have
Question # 4
Frequency of red colour as compared to that of violet colour is
Question # 5
In case of destructive interference of two waves, the amplitude of the resultant wave will be __________ either of the waves.
Question # 6
Huygen's principle states that
Question # 7
In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves
Question # 8
Speed of light in vacuum depends upon
Question # 9
Wavelength of red colour as compared to that of violet colour is
Question # 10
In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes
Question # 11
The wave nature of light was proposed by
Question # 12
Wavelength of light, on the average, is given by
Question # 13
Light waves are
Question # 14
Light waves are
Question # 15
The appearance of colours in the soap (or oil) film results from
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ECAT Physics Chapter 10 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | 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
|
| 3 | 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
|
| 4 | Monochromatic light means wave of |
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
|
| 5 | The appearance of colours in the soap (or oil) film results from |
A. Dispersion
B. Interference
C. Reflection
D. Refraction
|
| 6 | In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes |
A. Bright
B. Dark
C. Any of A or B
D. None of these
|
| 7 | 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
|
| 8 | 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
|
| 9 | 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
|
| 10 | Wavelength of red colour as compared to that of violet colour is |
A. Smaller
B. Longer
C. Equal
D. None of these
|
Test Questions