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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 magnifier forms a virtual image of the object at:
Question # 2
The ratio of the size of the image to that of object is called:
Question # 3
How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:
Question # 4
If the object is situated at focus of a convex lens, then its image is formed at:
Question # 5
The image of the tip of a needle is never sharp because of
Question # 6
Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
Question # 7
Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength?
Question # 8
A virtual image is formed when object is placed:
Question # 9
Light has:
Question # 10
Resolving power in mth order diffraction for grating is given by:
Question # 11
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 12
Frequency of red color as compared to that of violet color is:
Question # 13
In case of point, source of light shape of wavefront is:
Question # 14
The terms phase difference and path difference are:
Question # 15
The focal length of convex lens having magnifying power of 5.55 is:
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 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
|
| 2 | The velocity of light in vacuum can be changed by changing |
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
|
| 3 | Wave length of that color as compared to that of violet color is: |
A. Smaller
B. Longer
C. Equal
D. None of these
|
| 4 | 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
|
| 5 | With age, least distance of distinct vision: |
A. Increases
B. Decreases
C. Is not affected
D. None is correct
|
| 6 | If the focal length of the convex lens is 5 cm, then to get the real and inverted image of the same size as that of object, the object should be placed at: |
A. 15 cm
B. 10 cm
C. 20 cm
D. 5 cm
|
| 7 | Resolving power in mth order diffraction for grating is given by: |
A. R = N/m
B. R = m/N
C. R = N x m
D. None of these
|
| 8 | The magnifier forms a virtual image of the object at: |
A. None of these
B. Both A and B are correct
C. Much farther than the least distance
D. Least distance of distinct vision
|
| 9 | For the virtual image, option _______ is not correct: |
A. 1/p = 1/f -1/q
B. 1/f = 1/p -1/q
C. 1/p=1/p-1/f
D. 1/p=1/f+1/q
|
| 10 | A virtual image is formed when object is placed: |
A. Within focal length of a convex lens
B. Near the focal point of a concave lens
C. Both A and B
D. Away from 2F of a convex lens
|
Test Questions