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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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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 10 Optical Instruments
00:00
Question # 1
The wave nature of light was proposed by
Question # 2
Wavelength of light, on the average, is given by
Question # 3
The locus of all the points in the same phase of vibration is called
Question # 4
In case of point source of light, shape of wavefront is
Question # 5
Monochromatic light means wave of
Question # 6
Laws of reflection and refraction can also be explained by
Question # 7
Light waves are
Question # 8
Which one of the followings can act approximately as a source of monochromatic light
Question # 9
Electromagnetic waves transport
Question # 10
To observe interference of light, the condition, which must be met with is that the sources must be
Question # 11
Light has
Question # 12
The appearance of colours in the soap (or oil) film results from
Question # 13
The appearance of colours in the soap (or oil) film results from
Question # 14
The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself
Question # 15
The terms phase difference and path difference are
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A Abubakar basra 29 - Feb - 2024 00 Min 39 Sec 60/60 -
D Deuspeu 25 - Sep - 2024 00 Min 56 Sec 60/60 -
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ECAT Physics Chapter 10 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Wavelength of red colour as compared to that of violet colour is |
A. Smaller
B. Longer
C. Equal
D. None of these
|
| 2 | In case of point source of light, shape of wavefront is |
A. Spherical
B. Cylindrical
C. Plane
D. None of above
|
| 3 | Huygen principle is used to determine |
A. Speed of light
B. Location of wavefront
C. About polarized and unpolarized light
D. None of them
|
| 4 | Huygen's principle states that |
A. Light travels in straight line
B. Light has dual nature
C. Either of these
D. None of these
|
| 5 | 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
|
| 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 | 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 | 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
|
| 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 | The appearance of colours in the soap (or oil) film results from |
A. Dispersion
B. Interference
C. Reflection
D. Refraction
|
Test Questions