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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
According to Huygen's principle
Question # 2
The image of the tip of a needle is never sharp because of
Question # 3
Light has:
Question # 4
The magnifier forms a virtual image of the object at:
Question # 5
To observe interference of light, the condition, which must be met with is that the sources must be:
Question # 6
In the formula R = N x m for diffraction grating, N denotes:
Question # 7
Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength?
Question # 8
For the virtual image, option _______ is not correct:
Question # 9
Huygen's theory cannot explain
Question # 10
With age, least distance of distinct vision:
Question # 11
When a source of light isat very large distance,the shape of wavefront is:
Question # 12
When the object lies between F and 2F, the image formed by is formed at:
Question # 13
When the object lies between F and 2F, the image formed by is formed at:
Question # 14
Huygen's principles states that:
Question # 15
The contrast in the fringes in an interference pattern 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 -
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 | 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. 5 cm
B. 20 cm
C. 10 cm
D. 15 cm
|
| 3 | A convex lens acts as diverging lens when the object is placed: |
A. Beyond 2F
B. At 2F
C. With focal length
D. Between F and 2F
|
| 4 | In YDS experiment, fringe spacing means the distance between two consecutive ____fringes. |
A. Bright
B. Dark
C. Any of A and B
D. None of these
|
| 5 | Electromagnetic waves transport: |
A. Energy only
B. Momentum only
C. Both A and B are correct
D. None of is correct
|
| 6 | Wave length of that color as compared to that of violet color is: |
A. Smaller
B. Longer
C. Equal
D. None of these
|
| 7 | A grating with high resolving power can distinguish _______ difference in wavelengths : |
A. Smaller
B. Larger
C. Zero
D. None of these
|
| 8 | 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
|
| 9 | With age, least distance of distinct vision: |
A. Increases
B. Decreases
C. Is not affected
D. None is correct
|
| 10 | If the object and its image are located at a distance of 5 cm from the focus of a convex lens, the focus length of the lens will be: |
A. 5 cm
B. 10 cm
C. 20 cm
D. 25 cm
|
Test Questions
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