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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
A virtual image is formed when object is placed:
Question # 2
Light appears to travel in straight line because
Question # 3
When the object lies between F and 2F, the image formed by is formed at:
Question # 4
The least distance of distinct vision is:
Question # 5
Conventionally, all the distance p, q, f are measured from _____ of the lens:
Question # 6
The magnifier forms a virtual image of the object at:
Question # 7
The magnifier forms a virtual image of the object at:
Question # 8
To observe interference of light, the condition, which must be met with is that the sources must be:
Question # 9
Huygen principle is used to determine:
Question # 10
With age, least distance of distinct vision:
Question # 11
In YDS experiment, fringe spacing means the distance between two consecutive ____fringes.
Question # 12
The property of light which does not change with the nature of the medium is:
Question # 13
The ratio of the size of the image to that of object is called:
Question # 14
In order to get interference using two light rays
Question # 15
In case of point, source of light shape of wavefront 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 -
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M Muhammad Hashim 02 - Jun - 2024 02 Min 01 Sec 45/60 -
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M Muhammad Abdur.Rahman Khan 30 - Aug - 2024 03 Min 51 Sec 45/60 -
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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 | The velocity of light in vacuum can be changed by changing |
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
|
| 2 | Stars twinkle due to |
A. The fact that they do not emit light continuously
B. The refractive index of earth's atmosphere fluctuates
C. The Star's atmosphere absorbs its light intermittently
D. None of these
|
| 3 | When a source of light isat very large distance,the shape of wavefront is: |
A. Spherical
B. Cylindrical
C. Plane
D. None of these
|
| 4 | A grating with high resolving power can distinguish _______ difference in wavelengths : |
A. Smaller
B. Larger
C. Zero
D. None of these
|
| 5 | Resolving power in mth order diffraction for grating is given by: |
A. R = N x m
B. None of these
C. R = m/N
D. R = N/m
|
| 6 | Wave length of that color as compared to that of violet color is: |
A. Smaller
B. Longer
C. Equal
D. None of these
|
| 7 | Huygen's principles states that: |
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line
|
| 8 | 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
|
| 9 | A prism splits a beam of white light into seven component colors. This is so because |
A. Phase of different colors is different
B. Amplitude of different colors is different
C. Wavelength of different colors is different
D. Velocity of different colors is different
|
| 10 | Light has: |
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these
|
Test Questions
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