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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 focal length of convex lens having magnifying power of 5.55 is:
Question # 2
The size of the image is maximum when its distance from the magnifying glass is:
Question # 3
Which one of the following can act approximately as a source of monochromatic light;
Question # 4
The velocity of light in vacuum can be changed by changing
Question # 5
To observe interference of light, the condition, which must be met with is that the sources must be:
Question # 6
The locus of all points in a medium having same phase of vibration is called
Question # 7
With age, least distance of distinct vision:
Question # 8
Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength?
Question # 9
The contrast in the fringes in an interference pattern depends upon
Question # 10
In YDS experiment, fringe spacing means the distance between two consecutive ____fringes.
Question # 11
Monochromatic light means waves of:
Question # 12
A prism splits a beam of white light into seven component colors. This is so because
Question # 13
The locus of all the points in the same phase of vibration is called:
Question # 14
Wave length of that color as compared to that of violet color is:
Question # 15
Frequency of red color as compared to that of violet color 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 -
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 | The appearance of the colour in the soap (oil) film results from: |
A. Dispersion
B. Interference
C. Reflection
D. Refraction
|
| 3 | Huygen's theory cannot explain |
A. Diffraction
B. Interference
C. Polarization
D. Photoelectric effect
|
| 4 | In case of point, source of light shape of wavefront is: |
A. Spherical
B. Cylindrical
C. Plane
D. None of these
|
| 5 | 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
|
| 6 | A grating with high resolving power can distinguish _______ difference in wavelengths : |
A. Larger
B. Zero
C. None of these
D. Smaller
|
| 7 | 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
|
| 8 | A convex lens acts as diverging lens when the object is placed: |
A. Between F and 2F
B. At 2F
C. With focal length
D. Beyond 2F
|
| 9 | The wave nature of light was proposed by: |
A. Newton
B. Thomas Young
C. Huygen
D. None of these
|
| 10 | To see the minor details of the object by microscope, it should have: |
A. High magnifying power
B. High resolving power
C. Am objective of larger focal length
D. None of these
|
Test Questions
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