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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
For the virtual image, option _______ is not correct:
Question # 2
The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
Question # 3
Resolving power in mth order diffraction for grating is given by:
Question # 4
A prism splits a beam of white light into seven component colors. This is so because
Question # 5
Wave length of light, on the average, is given by:
Question # 6
The appearance of the colour in the soap (oil) film results from:
Question # 7
How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:
Question # 8
If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity
Question # 9
Angle between the ray of light and the corresponding wavefront is:
Question # 10
The terms phase difference and path difference are:
Question # 11
According to Huygen's principle
Question # 12
Huygen's theory cannot explain
Question # 13
The contrast in the fringes in an interference pattern depends upon
Question # 14
Least distance of distinct vision of an old man possibly becomes:
Question # 15
Electromagnetic waves transport:
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 | When the object lies between F and 2F, the image formed by is formed at: |
A. Virtual
B. Diminished
C. Erect
D. Real
|
| 2 | 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
|
| 3 | The image of the tip of a needle is never sharp because of |
A. Polarization of light
B. Interference of light
C. Diffraction of light
D. Reflection of light
|
| 4 | A convex lens acts as diverging lens when the object is placed: |
A. Between F and 2F
B. At 2F
C. With focal length
D. Beyond 2F
|
| 5 | The terms phase difference and path difference are: |
A. Same
B. Different
C. Equal
D. None of these
|
| 6 | 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
|
| 7 | Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be: |
A. 6 x 10-5rad
B. 7 x 10-5rad
C. 8 x 10-5rad
D. None of these
|
| 8 | The locus of all points in a medium having same phase of vibration is called |
A. Crest
B. Trough
C. Wavelength
D. Wave-front
|
| 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 | Least distance of distinct vision of an old man possibly becomes: |
A. A little less than 25 cm
B. A little more than 25 cm
C. Much less than 25 cm
D. None of these
|
Test Questions
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