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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
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Question # 1
The contrast in the fringes in an interference pattern depends upon
Question # 2
When the object lies between F and 2F, the image formed by is formed at:
Question # 3
The wave nature of light was proposed by:
Question # 4
The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
Question # 5
The image of the tip of a needle is never sharp because of
Question # 6
The magnifier forms a virtual image of the object at:
Question # 7
Light appears to travel in straight line because
Question # 8
If the object is situated at focus of a convex lens, then its image is formed at:
Question # 9
In order to get interference using two light rays
Question # 10
A line which represents the direction of travel of a wave is known as:
Question # 11
Huygen's theory cannot explain
Question # 12
The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:
Question # 13
The locus of all the points in the same phase of vibration is called:
Question # 14
The locus of all points in a medium having same phase of vibration is called
Question # 15
Light has:
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 -
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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 | 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
|
| 2 | 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
|
| 3 | 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
|
| 4 | The locus of all points in a medium having same phase of vibration is called |
A. Crest
B. Trough
C. Wavelength
D. Wave-front
|
| 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 | How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper: |
A. The upper half of the image is cut off
B. The brightness of the image is reduced
C. The brightness of the image is increased
D. No effect at all
|
| 7 | The distance from eye to near point is taken as: |
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
|
| 8 | 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
|
| 9 | A virtual image is formed when object is placed: |
A. Within focal length of a convex lens
B. Near the focal point of a concave lens
C. Both A and B
D. Away from 2F of a convex lens
|
| 10 | The appearance of the colour in the soap (oil) film results from: |
A. Dispersion
B. Interference
C. Reflection
D. Refraction
|
Test Questions
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