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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 convex lens acts as diverging lens when the object is placed:
Question # 2
The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
Question # 3
Huygen principle is used to determine:
Question # 4
Resolving power in mth order diffraction for grating is given by:
Question # 5
The magnifier forms a virtual image of the object at:
Question # 6
The appearance of the colour in the soap (oil) film results from:
Question # 7
A virtual image is formed when object is placed:
Question # 8
Which one of the following can act approximately as a source of monochromatic light;
Question # 9
When the object lies between F and 2F, the image formed by is formed at:
Question # 10
Stars twinkle due to
Question # 11
Light waves are:
Question # 12
A line which represents the direction of travel of a wave is known as:
Question # 13
The cause of mirage observed in deserts in bright sunlight is due to
Question # 14
In order to get interference using two light rays
Question # 15
Resolving power in mth order diffraction for grating is given by:
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 | With age, least distance of distinct vision: |
A. Increases
B. Decreases
C. Is not affected
D. None is correct
|
| 2 | The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths: |
A. Greater than
B. Less than
C. Equal to
D. None of these
|
| 3 | In an interference pattern of Young's double slit(YDS) experiment: |
A. Bright fringesare wider than dark fringes
B. Dark fringes are wider than bright fringes
C. Both dark and bright fringes are of equal width
D.
Central fringes are wider than the outer fringes
|
| 4 | Electromagnetic waves transport: |
A. Energy only
B. Momentum only
C. Both A and B are correct
D. None of is correct
|
| 5 | Huygen's principles states that: |
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line
|
| 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 | 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
|
| 8 | A virtual image is formed when object is placed: |
A. Within focal length of a convex lens
B. Near the focal point of a concave lens
C. Both A and B
D. Away from 2F of a convex lens
|
| 9 | 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
|
| 10 | A convex lens acts as diverging lens when the object is placed: |
A. Beyond 2F
B. At 2F
C. With focal length
D. Between F and 2F
|
Test Questions
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