ECAT Pre Computer Science Chapter 9 MCQ Test With Answer

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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ECAT Physics Chapter 9 Physical Optics

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Question # 1

A prism splits a beam of white light into seven component colors. This is so because

Question # 2

The cause of mirage observed in deserts in bright sunlight is due to

Question # 3

The ratio of the size of the image to that of object is called:

Question # 4

A virtual image is formed when object is placed:

Question # 5

The least distance of distinct vision is:

Question # 6

Huygen's principles states that:

Question # 7

Huygen's theory cannot explain

Question # 8

A convex lens acts as diverging lens when the object is placed:

Question # 9

The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:

Question # 10

A grating with high resolving power can distinguish _______ difference in wavelengths :

Question # 11

The size of the image is maximum when its distance from the magnifying glass is:

Question # 12

The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called

Question # 13

How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:

Question # 14

Conventionally, all the distance p, q, f are measured from _____ of the lens:

Question # 15

The appearance of the colour in the soap (oil) film results from:

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 The size of the image is maximum when its distance from the magnifying glass is:
A. 0.10 m
B. 0.15 m
C. 0.20 m
D. 0.25 m
2 Electromagnetic waves transport:
A. Energy only
B. Momentum only
C. Both A and B are correct
D. None of is correct
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 least distance of distinct vision is:
A. 10 cm
B. 25 cm
C. 50 cm
D. 100 cm
5 Wave length of light, on the average, is given by:
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
6 The terms phase difference and path difference are:
A. Same
B. Different
C. Equal
D. None of these
7 Frequency of red color as compared to that of violet color is:
A. Equal
B. Smaller
C. Greater
D. None of these
8 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
9 Monochromatic light means waves of:
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
10 Light has:
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these

Test Questions

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