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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
The size of the image is maximum when its distance from the magnifying glass is:
Question # 2
The magnifier forms a virtual image of the object at:
Question # 3
A virtual image is formed when object is placed:
Question # 4
The focal length of convex lens having magnifying power of 5.55 is:
Question # 5
When the object lies between F and 2F, the image formed by is formed at:
Question # 6
A line which represents the direction of travel of a wave is known as:
Question # 7
In case of constructive interference of two waves, the amplitude of the resultant wave is _______ either of the waves:
Question # 8
According to Huygen's principle
Question # 9
Angle between the ray of light and the corresponding wavefront is:
Question # 10
A convex lens acts as diverging lens when the object is placed:
Question # 11
The image of the tip of a needle is never sharp because of
Question # 12
Huygen's principles states that:
Question # 13
Huygen's theory cannot explain
Question # 14
If the object is situated at focus of a convex lens, then its image is formed at:
Question # 15
When the object lies between F and 2F, the image formed by is formed 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 | Speed of light in vacuum depends upon: |
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
|
| 2 | To observe interference of light, the condition, which must be met with is that the sources must be: |
A. Monochromatic
B. Phase coherent
C. Both of above
D. None of above
|
| 3 | The appearance of the colour in the soap (oil) film results from: |
A. Dispersion
B. Interference
C. Reflection
D. Refraction
|
| 4 | 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
|
| 5 | With age, least distance of distinct vision: |
A. Increases
B. Decreases
C. Is not affected
D. None is correct
|
| 6 | A grating with high resolving power can distinguish _______ difference in wavelengths : |
A. Smaller
B. Larger
C. Zero
D. None of these
|
| 7 | 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
|
| 8 | 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
|
| 9 | If the object is placed at 12 cm distance from a convex lens of focal length 6 cm, then we get an image of ____ as that of object: |
A. Double the size
B. Same size
C. Half the size
D. None of these
|
| 10 | Huygen principle is used to determine: |
A. Speed of light
B. Location of wavefront
C. About polarized or unpolarized light
D. None of them
|
Test Questions