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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 ratio of the size of the image to that of object is called:
Question # 2
The size of the image is maximum when its distance from the magnifying glass is:
Question # 3
For the virtual image, option _______ is not correct:
Question # 4
Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
Question # 5
The magnifier forms a virtual image of the object at:
Question # 6
In case of constructive interference of two waves, the amplitude of the resultant wave is _______ either of the waves:
Question # 7
The locus of all points in a medium having same phase of vibration is called
Question # 8
Resolving power in mth order diffraction for grating is given by:
Question # 9
In case of point, source of light shape of wavefront is:
Question # 10
The velocity of light in vacuum can be changed by changing
Question # 11
If the object is placed at 12 cm distance from a convex lens of focal length 6 cm, then we get an image of ____ as that of object:
Question # 12
Monochromatic light means waves of:
Question # 13
The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called
Question # 14
The property of light which does not change with the nature of the medium is:
Question # 15
The least distance of distinct vision 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 | In the formula R = N x m for diffraction grating, N denotes: |
A. No. of lines/cm
B. No. of lines/meter
C. Total number of lines
D. None of above
|
| 2 | With age, least distance of distinct vision: |
A. Increases
B. Decreases
C. Is not affected
D. None is correct
|
| 3 | 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
|
| 4 | 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
|
| 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 | The cause of mirage observed in deserts in bright sunlight is due to |
A. Refraction of light
B. Reflection of light
C. Scattering of light
D. Total internal reflection of light
|
| 7 | If the object is situated at focus of a convex lens, then its image is formed at: |
A. F
B. 2F
C. Infinity
D. None of these
|
| 8 | The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called |
A. Diffraction
B. Interference
C. Polarization
D. Dispersion
|
| 9 | The terms phase difference and path difference are: |
A. Same
B. Different
C. Equal
D. None of these
|
| 10 | Wave length of light, on the average, is given by: |
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
|
Test Questions