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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
Conventionally, all the distance p, q, f are measured from _____ of the lens:
Question # 3
The cause of mirage observed in deserts in bright sunlight is due to
Question # 4
Frequency of red color as compared to that of violet color is:
Question # 5
The locus of all the points in the same phase of vibration is called:
Question # 6
In the formula R = N x m for diffraction grating, N denotes:
Question # 7
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:
Question # 8
Light waves are:
Question # 9
A magnifier gives an image which is:
Question # 10
The appearance of the colour in the soap (oil) film results from:
Question # 11
The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called
Question # 12
The distance from eye to near point is taken as:
Question # 13
The velocity of light in vacuum can be changed by changing
Question # 14
A line which represents the direction of travel of a wave is known as:
Question # 15
A convex lens acts as diverging lens when the object is placed:
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 | In case of point, source of light shape of wavefront is: |
A. Spherical
B. Cylindrical
C. Plane
D. None of these
|
| 2 | When the object lies between F and 2F, the image formed by is formed at: |
A. Virtual
B. Diminished
C. Erect
D. Real
|
| 3 | The magnifier forms a virtual image of the object at: |
A. None of these
B. Least distance of distinct vision
C. Much farther than the least distance
D. Both A and B are correct
|
| 4 | If the object and its image are located at a distance of 5 cm from the focus of a convex lens, the focus length of the lens will be: |
A. 5 cm
B. 10 cm
C. 20 cm
D. 25 cm
|
| 5 | 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
|
| 6 | The locus of all the points in the same phase of vibration is called: |
A. Wave packet
B. Wave front
C. Wave number
D. None of them
|
| 7 | The cause of mirage observed in deserts in bright sunlight is due to |
A. Refraction of light
B. Reflection of light
C. Scattering of light
D. Total internal reflection of light
|
| 8 | A magnifier gives an image which is: |
A. Virtual, inverted
B. Real, erect
C. Virtual, erect
D. Real, inverted
|
| 9 | Which one of the following phenomenon cannot be explained on the bases of Huygen's theory |
A. Refraction
B. Reflection
C. Diffraction
D. Formation of spectrum
|
| 10 | Light has: |
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these
|
Test Questions
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