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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
When the object lies between F and 2F, the image formed by is formed at:
Question # 2
In YDS experiment, fringe spacing means the distance between two consecutive ____fringes.
Question # 3
A magnifier gives an image which is:
Question # 4
The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called
Question # 5
A convex lens acts as diverging lens when the object is placed:
Question # 6
Frequency of red color as compared to that of violet color is:
Question # 7
Angle between the ray of light and the corresponding wavefront is:
Question # 8
Light waves are:
Question # 9
The focal length of convex lens having magnifying power of 5.55 is:
Question # 10
The cause of mirage observed in deserts in bright sunlight is due to
Question # 11
Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
Question # 12
Which one of the following can act approximately as a source of monochromatic light;
Question # 13
A virtual image is formed when object is placed:
Question # 14
Monochromatic light means waves of:
Question # 15
The distance from eye to near point is taken as:
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 | If the focal length of the convex lens is 5 cm, then to get the real and inverted image of the same size as that of object, the object should be placed at: |
A. 15 cm
B. 10 cm
C. 20 cm
D. 5 cm
|
| 2 | Monochromatic light means waves of: |
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
|
| 3 | A magnifier gives an image which is: |
A. Virtual, inverted
B. Real, erect
C. Virtual, erect
D. Real, inverted
|
| 4 | Which one of the following can act approximately as a source of monochromatic light; |
A. Neon lamp
B. Fluorescent tube
C. Sodium lamp
D. None of these
|
| 5 | Angle between the ray of light and the corresponding wavefront is: |
A. 0°
B. 60°
C. 90°
D. 120°
|
| 6 | According to Huygen's principle |
A. light travels in straight line
B. Light is a transvers wave
C. Light has dual nature
D. All points on the primary wave-front are the sources of secondary wavelets
|
| 7 | The contrast in the fringes in an interference pattern depends upon |
A. Fringe width
B. Relative difference intensities of the two sources
C. Distance between the slits
D. Wavelength
|
| 8 | Light has: |
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these
|
| 9 | 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
|
| 10 | The property of light which does not change with the nature of the medium is: |
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
|
Test Questions
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