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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 waves are:
Question # 2
The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
Question # 3
A convex lens acts as diverging lens when the object is placed:
Question # 4
Electromagnetic waves transport:
Question # 5
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 6
The velocity of light in vacuum can be changed by changing
Question # 7
A magnifier gives an image which is:
Question # 8
The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.
Question # 9
With age, least distance of distinct vision:
Question # 10
Monochromatic light means waves of:
Question # 11
In order to get interference using two light rays
Question # 12
A convex lens acts as diverging lens when the object is placed:
Question # 13
A prism splits a beam of white light into seven component colors. This is so because
Question # 14
Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
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 -
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 | Light waves are: |
A. Transverse wave
B. Longitudinal wave
C. Compressional wave
D. None of them
|
| 2 | 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
|
| 3 | Frequency of red color as compared to that of violet color is: |
A. Equal
B. Smaller
C. Greater
D. None of these
|
| 4 | How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper: |
A. The upper half of the image is cut off
B. The brightness of the image is reduced
C. The brightness of the image is increased
D. No effect at all
|
| 5 | Light appears to travel in straight line because |
A. It is not absorbed by the atmosphere
B. It is refracted by the atmosphere
C. Its wavelength is very small
D. Its velocity is very large
|
| 6 | To sources are said to be coherent if they have: |
A. Same amplitude
B. Same wavelength
C. Definite phase relation with each other
D. None of them
|
| 7 | Wave length of light, on the average, is given by: |
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
|
| 8 | A line which represents the direction of travel of a wave is known as: |
A. Spherical Wavefront
B. Locus
C. Ray
D. Either B or C
|
| 9 | 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
|
| 10 | The locus of all points in a medium having same phase of vibration is called |
A. Crest
B. Trough
C. Wavelength
D. Wave-front
|
Test Questions
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