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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
When the object lies between F and 2F, the image formed by is formed at:
Question # 2
Wave length of light, on the average, is given by:
Question # 3
For the virtual image, option _______ is not correct:
Question # 4
The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:
Question # 5
When the object lies between F and 2F, the image formed by is formed at:
Question # 6
In an interference pattern of Young's double slit(YDS) experiment:
Question # 7
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:
Question # 8
The focal length of convex lens having magnifying power of 5.55 is:
Question # 9
Light has:
Question # 10
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 11
In the formula R = N x m for diffraction grating, N denotes:
Question # 12
The property of light which does not change with the nature of the medium is:
Question # 13
The distance from eye to near point is taken as:
Question # 14
To sources are said to be coherent if they have:
Question # 15
Resolving power in mth order diffraction for grating is given by:
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 -
H Hamza Mukhtair 19 - Jul - 2022 00 Min 49 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 -
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 | 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
|
| 2 | Which one of the following phenomenon cannot be explained on the bases of Huygen's theory |
A. Refraction
B. Reflection
C. Diffraction
D. Formation of spectrum
|
| 3 | When the object lies between F and 2F, the image formed by is formed at: |
A. Real
B. Virtual
C. Diminished
D. Erect
|
| 4 | Wave length of that color as compared to that of violet color is: |
A. Smaller
B. Longer
C. Equal
D. None of these
|
| 5 | When the object lies between F and 2F, the image formed by is formed at: |
A. Virtual
B. Diminished
C. Erect
D. Real
|
| 6 | 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
|
| 7 | The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself. |
A. Equal to
B. Greater than
C. Smaller than
D. None of these
|
| 8 | A magnifier gives an image which is: |
A. Virtual, inverted
B. Real, erect
C. Virtual, erect
D. Real, inverted
|
| 9 | In case of constructive interference of two waves, the amplitude of the resultant wave is _______ either of the waves: |
A. Greater than
B. Equal to
C. Smaller than
D. None of these
|
| 10 | 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
|
Test Questions
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