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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
Least distance of distinct vision of an old man possibly becomes:
Question # 2
Wave length of that color as compared to that of violet color is:
Question # 3
Resolving power in mth order diffraction for grating is given 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 magnifier forms a virtual image of the object at:
Question # 6
Light has:
Question # 7
With age, least distance of distinct vision:
Question # 8
The contrast in the fringes in an interference pattern depends upon
Question # 9
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:
Question # 10
In order to get interference using two light rays
Question # 11
To see the minor details of the object by microscope, it should have:
Question # 12
The appearance of the colour in the soap (oil) film results from:
Question # 13
Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength?
Question # 14
The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called
Question # 15
The focal length of convex lens having magnifying power of 5.55 is:
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 | When the same object is viewed at a shorter distance, the image on the retina of the eye is _____ the so the object appears: |
A. Greater, smaller
B. Smaller, smaller
C. Smaller, larger
D. Greater, larger
|
| 2 | Monochromatic light means waves of: |
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
|
| 3 | When the object lies between F and 2F, the image formed by is formed at: |
A. Real
B. Virtual
C. Diminished
D. Erect
|
| 4 | The wave nature of light was proposed by: |
A. Newton
B. Thomas Young
C. Huygen
D. None of these
|
| 5 | The velocity of light in vacuum can be changed by changing |
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
|
| 6 | 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
|
| 7 | 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
|
| 8 | Light has: |
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these
|
| 9 | A line which represents the direction of travel of a wave is known as: |
A. Spherical Wavefront
B. Locus
C. Ray
D. Either B or C
|
| 10 | Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength? |
A. Gamma rays, micro waves, visible light
B. Radio waves, ultraviolet waves, X-rays
C. Ultraviolet rays, infrared rays, micro waves
D. Visible light, gamma rays, radio waves
|
Test Questions