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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
Light has:
Question # 3
The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.
Question # 4
Resolving power in mth order diffraction for grating is given by:
Question # 5
The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:
Question # 6
The velocity of light in vacuum can be changed by changing
Question # 7
The contrast in the fringes in an interference pattern depends upon
Question # 8
The distance from eye to near point is taken as:
Question # 9
Which one of the following can act approximately as a source of monochromatic light;
Question # 10
A virtual image is formed when object is placed:
Question # 11
The terms phase difference and path difference are:
Question # 12
A magnifier gives an image which is:
Question # 13
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 14
Frequency of red color as compared to that of violet color is:
Question # 15
If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity
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 -
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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 -
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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 -
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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 | 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
|
| 2 | The velocity of light in vacuum can be changed by changing |
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
|
| 3 | Conventionally, all the distance p, q, f are measured from _____ of the lens: |
A. Focus
B. Optical center
C. Edges
D. None of these
|
| 4 | 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
|
| 5 | Frequency of red color as compared to that of violet color is: |
A. Equal
B. Smaller
C. Greater
D. None of these
|
| 6 | When the object lies between F and 2F, the image formed by is formed at: |
A. Virtual
B. Diminished
C. Erect
D. Real
|
| 7 | 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
|
| 8 | The appearance of the colour in the soap (oil) film results from: |
A. Dispersion
B. Interference
C. Reflection
D. Refraction
|
| 9 | The ratio of the size of the image to that of object is called: |
A. Focal length
B. Aperture
C. Linear magnification
D. Principal axis
|
| 10 | The locus of all points in a medium having same phase of vibration is called |
A. Crest
B. Trough
C. Wavelength
D. Wave-front
|
Test Questions
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