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MCQ's Test For Physics ECAT Pre Engineering Chapter 9 Physical Optics
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 9 Physical Optics
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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 9 Physical Optics
00:00
Question # 1
To see the minor details of the object by microscope, it should have:
Question # 2
The least distance of distinct vision is:
Question # 3
In YDS experiment, fringe spacing means the distance between two consecutive ____fringes.
Question # 4
Frequency of red color as compared to that of violet color is:
Question # 5
Laws of reflection and refraction can also be explained by:
Question # 6
When the object lies between F and 2F, the image formed by is formed at:
Question # 7
In case of constructive interference of two waves, the amplitude of the resultant wave is _______ either of the waves:
Question # 8
Huygen's theory cannot explain
Question # 9
The wave nature of light was proposed by:
Question # 10
A magnifier gives an image which is:
Question # 11
When a source of light isat very large distance,the shape of wavefront is:
Question # 12
The velocity of light in vacuum can be changed by changing
Question # 13
Least distance of distinct vision of an old man possibly becomes:
Question # 14
Speed of light in vacuum depends upon:
Question # 15
The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.
Top Scorers Of Physics ECAT Pre Engineering Chapter 9 Physical Optics MCQ`s Test
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F Farzand Shah Farzand Shah 17 - Apr - 2024 01 Min 00 Sec 60/60 -
D Deuspeu 25 - Sep - 2024 01 Min 40 Sec 60/60 -
U Umarkhan35429@gmail.com Khan 04 - May - 2024 05 Min 00 Sec 60/60 -
H Haq Nawaz 16 - May - 2024 02 Min 31 Sec 55/60 -
M M Saifullah 20 - Jul - 2024 04 Min 06 Sec 55/60 -
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M moeez farooq 06 - Mar - 2024 43 Min 27 Sec 55/60 -
M M Umer Arain 10 - Nov - 2024 00 Min 15 Sec 50/60 -
A Adan Zahra 14 - Mar - 2024 01 Min 22 Sec 50/60 -
H Huzaifa Asim 25 - May - 2024 01 Min 32 Sec 50/60 -
A Arian Ahmed 06 - Mar - 2024 00 Min 03 Sec 45/60 -
A afzal ibrahim 06 - Mar - 2024 01 Min 55 Sec 45/60 -
A Ayesha Sohail 03 - Jun - 2024 03 Min 04 Sec 45/60 -
A Alishba Dabeer 02 - Jun - 2024 03 Min 25 Sec 45/60 -
T Tamshi Sohail 21 - Apr - 2024 06 Min 48 Sec 45/60
ECAT Physics Chapter 9 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Huygen principle is used to determine: |
A. Speed of light
B. Location of wavefront
C. About polarized or unpolarized light
D. None of them
|
| 2 | Huygen's principles states that: |
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line
|
| 3 | Wave length of light, on the average, is given by: |
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
|
| 4 | 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
|
| 5 | If the object is situated at focus of a convex lens, then its image is formed at: |
A. F
B. 2F
C. Infinity
D. None of these
|
| 6 | 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
|
| 7 | 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
|
| 8 | A grating with high resolving power can distinguish _______ difference in wavelengths : |
A. Smaller
B. Larger
C. Zero
D. None of these
|
| 9 | Angle between the ray of light and the corresponding wavefront is: |
A. 0°
B. 60°
C. 90°
D. 120°
|
| 10 | 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
|
Test Questions