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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
Frequency of red colour as compared to that of violet colour is
Question # 2
Which one of the followings can act approximately as a source of monochromatic light
Question # 3
The terms phase difference and path difference are
Question # 4
The wave nature of light was proposed by
Question # 5
Two sources are said to be coherent if they have
Question # 6
The locus of all the points in the same phase of vibration is called
Question # 7
Huygen principle is used to determine
Question # 8
In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes
Question # 9
Wavelength of light, on the average, is given by
Question # 10
In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves
Question # 11
When the source of light is at very large distance, the shape of wavefront is
Question # 12
In case of destructive interference of two waves, the amplitude of the resultant wave will be __________ either of the waves.
Question # 13
Light has
Question # 14
Wavelength of red colour as compared to that of violet colour is
Question # 15
Laws of reflection and refraction can also be explained by
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ECAT Physics Chapter 10 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | The wave nature of light was proposed by |
A. Newton
B. Thomas Young
C. Huygen
D. None of these
|
| 3 | Angle between ray of light and the corresponding wavefront is |
A. 00
B. 600
C. 900
D. 1200
|
| 4 | The appearance of colours in the soap (or oil) film results from |
A. Dispersion
B. Interference
C. Reflection
D. Refraction
|
| 5 | In case of point source of light, shape of wavefront is |
A. Spherical
B. Cylindrical
C. Plane
D. None of above
|
| 6 | 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
|
| 7 | Wavelength of red colour as compared to that of violet colour is |
A. Smaller
B. Longer
C. Equal
D. None of these
|
| 8 | The terms phase difference and path difference are |
A. Same
B. Different
C. Equal
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 | 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
|
Test Questions