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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
Light waves are:
Question # 2
A line which represents the direction of travel of a wave is known as:
Question # 3
Light has:
Question # 4
With age, least distance of distinct vision:
Question # 5
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 6
The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called
Question # 7
The wave nature of light was proposed by:
Question # 8
Conventionally, all the distance p, q, f are measured from _____ of the lens:
Question # 9
According to Huygen's principle
Question # 10
Frequency of red color as compared to that of violet color is:
Question # 11
Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength?
Question # 12
In order to get interference using two light rays
Question # 13
How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:
Question # 14
Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
Question # 15
Huygen's theory cannot explain
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 | The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is: |
A. 1
B. 0.2
C. 2
D. 0.1
|
| 2 | How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper: |
A. The upper half of the image is cut off
B. The brightness of the image is reduced
C. The brightness of the image is increased
D. No effect at all
|
| 3 | Conventionally, all the distance p, q, f are measured from _____ of the lens: |
A. Focus
B. Optical center
C. Edges
D. None of these
|
| 4 | 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
|
| 5 | The property of light which does not change with the nature of the medium is: |
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
|
| 6 | When the object lies between F and 2F, the image formed by is formed at: |
A. Virtual
B. Diminished
C. Erect
D. Real
|
| 7 | 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
|
| 8 | The size of the image is maximum when its distance from the magnifying glass is: |
A. 0.10 m
B. 0.15 m
C. 0.20 m
D. 0.25 m
|
| 9 | The terms phase difference and path difference are: |
A. Same
B. Different
C. Equal
D. None of these
|
| 10 | In case of point, source of light shape of wavefront is: |
A. Spherical
B. Cylindrical
C. Plane
D. None of these
|
Test Questions
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