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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
Huygen's theory cannot explain
Question # 2
The locus of all points in a medium having same phase of vibration is called
Question # 3
The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
Question # 4
Stars twinkle due to
Question # 5
A convex lens acts as diverging lens when the object is placed:
Question # 6
In case of point, source of light shape of wavefront is:
Question # 7
If the object is situated at focus of a convex lens, then its image is formed at:
Question # 8
The cause of mirage observed in deserts in bright sunlight is due to
Question # 9
A line which represents the direction of travel of a wave is known as:
Question # 10
Wave length of light, on the average, is given by:
Question # 11
Least distance of distinct vision of an old man possibly becomes:
Question # 12
The wave nature of light was proposed by:
Question # 13
Laws of reflection and refraction can also be explained by:
Question # 14
Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
Question # 15
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:
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 | Angle between the ray of light and the corresponding wavefront is: |
A. 0°
B. 60°
C. 90°
D. 120°
|
| 2 | 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
|
| 3 | Speed of light in vacuum depends upon: |
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
|
| 4 | 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
|
| 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 | In case of constructive interference of two waves, the amplitude of the resultant wave is _______ either of the waves: |
A. Greater than
B. Equal to
C. Smaller than
D. None of these
|
| 7 | 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
|
| 8 | The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is: |
A. 1
B. 0.2
C. 2
D. 0.1
|
| 9 | 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. 5 cm
B. 20 cm
C. 10 cm
D. 15 cm
|
| 10 | When the object lies between F and 2F, the image formed by is formed at: |
A. Virtual
B. Diminished
C. Erect
D. Real
|
Test Questions
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