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MCQ's Test For ECAT Physics Chapter 9 Physical Optics
Try The MCQ's Test For ECAT Physics Chapter 9 Physical Optics
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Total Questions15
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Time Allowed20
ECAT Physics Chapter 9 Physical Optics
00:00
Question # 1
The ratio of the size of the image to that of object is called:
Question # 2
Which one of the following can act approximately as a source of monochromatic light;
Question # 3
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 4
The image of the tip of a needle is never sharp because of
Question # 5
According to Huygen's principle
Question # 6
In order to get interference using two light rays
Question # 7
Frequency of red color as compared to that of violet color is:
Question # 8
In case of destructive interference of two waves, the amplitude of the resultant wave will be ____ either of the waves:
Question # 9
To sources are said to be coherent if they have:
Question # 10
When a source of light isat very large distance,the shape of wavefront is:
Question # 11
In case of constructive interference of two waves, the amplitude of the resultant wave is _______ either of the waves:
Question # 12
A magnifier gives an image which is:
Question # 13
The wave nature of light was proposed by:
Question # 14
Electromagnetic waves transport:
Question # 15
Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
Top Scorers Of ECAT Physics Chapter 9 Physical Optics MCQ`s Test
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H Heer 21 - Jan - 2024 00 Min 29 Sec 60/60 -
V Vertex Gaming 16 - Jul - 2024 00 Min 47 Sec 55/60 -
T Tasser Haider 31 - May - 2024 01 Min 13 Sec 50/60 -
M Maham Mehar 31 - Jul - 2024 02 Min 42 Sec 50/60 -
M Manoush Fatima 31 - May - 2024 03 Min 21 Sec 50/60 -
A Abdullah Baloch 27 - Jul - 2024 03 Min 48 Sec 50/60 -
E Esha Azeem 03 - Dec - 2023 15 Min 03 Sec 50/60 -
M Muhammad Hashim 02 - Jun - 2024 02 Min 01 Sec 45/60 -
A Ayan Shuaib 29 - Jan - 2024 02 Min 23 Sec 45/60 -
M Muhammad Abdur.Rahman Khan 30 - Aug - 2024 03 Min 51 Sec 45/60 -
H Hira Maqsood 20 - Feb - 2024 07 Min 03 Sec 45/60 -
S suzi 09 - Feb - 2026 01 Min 42 Sec 44/60 -
M M.Faiq 22 - May - 2024 02 Min 46 Sec 40/60 -
M Muhammad Sadaqat 10 - Mar - 2023 03 Min 54 Sec 40/60 -
H Haseeb Ur Rehman raja 25 - Jun - 2024 05 Min 10 Sec 40/60
ECAT Physics Chapter 9 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Resolving power in mth order diffraction for grating is given by: |
A. R = N x m
B. None of these
C. R = m/N
D. R = N/m
|
| 2 | To 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
|
| 3 | The image of the tip of a needle is never sharp because of |
A. Polarization of light
B. Interference of light
C. Diffraction of light
D. Reflection of light
|
| 4 | The locus of all the points in the same phase of vibration is called: |
A. Wave packet
B. Wave front
C. Wave number
D. None of them
|
| 5 | In order to get interference using two light rays |
A. The sources should be monochromatic and coherent
B. The sources should have the same frequency
C. Superposition should be linear
D. All of these
|
| 6 | With age, least distance of distinct vision: |
A. Increases
B. Decreases
C. Is not affected
D. None is correct
|
| 7 | Least distance of distinct vision of an old man possibly becomes: |
A. A little less than 25 cm
B. A little more than 25 cm
C. Much less than 25 cm
D. None of these
|
| 8 | To see the minor details of the object by microscope, it should have: |
A. High magnifying power
B. High resolving power
C. Am objective of larger focal length
D. None of these
|
| 9 | Light waves are: |
A. Transverse wave
B. Longitudinal wave
C. Compressional wave
D. None of them
|
| 10 | The least distance of distinct vision is: |
A. 10 cm
B. 25 cm
C. 50 cm
D. 100 cm
|
Test Questions
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