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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
Light appears to travel in straight line because
Question # 2
Angle between the ray of light and the corresponding wavefront is:
Question # 3
Speed of light in vacuum depends upon:
Question # 4
The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:
Question # 5
A prism splits a beam of white light into seven component colors. This is so because
Question # 6
Wave length of that color as compared to that of violet color is:
Question # 7
The distance from eye to near point is taken as:
Question # 8
The locus of all points in a medium having same phase of vibration is called
Question # 9
With age, least distance of distinct vision:
Question # 10
To see the minor details of the object by microscope, it should have:
Question # 11
Frequency of red color as compared to that of violet color is:
Question # 12
Least distance of distinct vision of an old man possibly becomes:
Question # 13
The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.
Question # 14
The ratio of the size of the image to that of object is called:
Question # 15
Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
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 | Wave length of light, on the average, is given by: |
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
|
| 2 | Huygen's principles states that: |
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line
|
| 3 | 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
|
| 4 | 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
|
| 5 | Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be: |
A. 6 x 10-5rad
B. 7 x 10-5rad
C. 8 x 10-5rad
D. None of these
|
| 6 | The wave nature of light was proposed by: |
A. Newton
B. Thomas Young
C. Huygen
D. None of these
|
| 7 | If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity |
A. Fringe width will decrease
B. Fringe width will increase
C. Fringe width will remain unchanged
D. Fringe will become less intense
|
| 8 | The distance from eye to near point is taken as: |
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
|
| 9 | The least distance of distinct vision is: |
A. 10 cm
B. 25 cm
C. 50 cm
D. 100 cm
|
| 10 | Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength? |
A. Gamma rays, micro waves, visible light
B. Radio waves, ultraviolet waves, X-rays
C. Ultraviolet rays, infrared rays, micro waves
D. Visible light, gamma rays, radio waves
|
Test Questions
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