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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 least distance of distinct vision is:
Question # 2
Light appears to travel in straight line because
Question # 3
A magnifier gives an image which is:
Question # 4
A virtual image is formed when object is placed:
Question # 5
The property of light which does not change with the nature of the medium is:
Question # 6
The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
Question # 7
The appearance of the colour in the soap (oil) film results from:
Question # 8
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 9
Resolving power in mth order diffraction for grating is given by:
Question # 10
Huygen's principles states that:
Question # 11
A convex lens acts as diverging lens when the object is placed:
Question # 12
The size of the image is maximum when its distance from the magnifying glass is:
Question # 13
When a source of light isat very large distance,the shape of wavefront is:
Question # 14
The velocity of light in vacuum can be changed by changing
Question # 15
Speed of light in vacuum depends upon:
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 -
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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 -
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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 | Huygen's theory cannot explain |
A. Diffraction
B. Interference
C. Polarization
D. Photoelectric effect
|
| 2 | Light appears to travel in straight line because |
A. It is not absorbed by the atmosphere
B. It is refracted by the atmosphere
C. Its wavelength is very small
D. Its velocity is very large
|
| 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 | A ray passing through optical center of a lens, after refraction: |
A. Passes through focus
B. Go deviated
C. Retraces its path
D. Both B and C
|
| 5 | 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
|
| 6 | The magnifier forms a virtual image of the object at: |
A. None of these
B. Least distance of distinct vision
C. Much farther than the least distance
D. Both A and B are correct
|
| 7 | A grating with high resolving power can distinguish _______ difference in wavelengths : |
A. Larger
B. Zero
C. None of these
D. Smaller
|
| 8 | 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
|
| 9 | 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
|
| 10 | Which one of the following can act approximately as a source of monochromatic light; |
A. Neon lamp
B. Fluorescent tube
C. Sodium lamp
D. None of these
|
Test Questions