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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
Light has:
Question # 2
The magnifier forms a virtual image of the object at:
Question # 3
In case of destructive interference of two waves, the amplitude of the resultant wave will be ____ either of the waves:
Question # 4
A line which represents the direction of travel of a wave is known as:
Question # 5
According to Huygen's principle
Question # 6
Conventionally, all the distance p, q, f are measured from _____ of the lens:
Question # 7
The wave nature of light was proposed by:
Question # 8
In case of constructive interference of two waves, the amplitude of the resultant wave is _______ either of the waves:
Question # 9
The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called
Question # 10
A prism splits a beam of white light into seven component colors. This is so because
Question # 11
When the object lies between F and 2F, the image formed by is formed at:
Question # 12
Angle between the ray of light and the corresponding wavefront is:
Question # 13
Electromagnetic waves transport:
Question # 14
A convex lens acts as diverging lens when the object is placed:
Question # 15
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:
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 -
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T Tasser Haider 31 - May - 2024 01 Min 13 Sec 50/60 -
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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 | The focal length of convex lens having magnifying power of 5.55 is: |
A. 5.5 cm
B. 5 cm
C. 4.5 cm
D. 6 cm
|
| 2 | 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
|
| 3 | In YDS experiment, fringe spacing means the distance between two consecutive ____fringes. |
A. Bright
B. Dark
C. Any of A and B
D. None of these
|
| 4 | 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
|
| 5 | A ray passing through optical center of a lens, after refraction: |
A. Passes through focus
B. Go deviated
C. Retraces its path
D. Both B and C
|
| 6 | Wave length of light, on the average, is given by: |
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
|
| 7 | Wave length of that color as compared to that of violet color is: |
A. Smaller
B. Longer
C. Equal
D. None of these
|
| 8 | The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is: |
A. 1
B. 0.2
C. 2
D. 0.1
|
| 9 | Huygen principle is used to determine: |
A. Speed of light
B. Location of wavefront
C. About polarized or unpolarized light
D. None of them
|
| 10 | In the formula R = N x m for diffraction grating, N denotes: |
A. No. of lines/cm
B. No. of lines/meter
C. Total number of lines
D. None of above
|
Test Questions