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Question 1 of 30
1. Question
The impression or sensation remains on the retina for about how may seconds even after removal of the object ?
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Question 2 of 30
2. Question
The cells present in the retina of eye and responding to intensity of light are:
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Question 3 of 30
3. Question
The cells present in the retina of eye and responding to colour are:
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Question 4 of 30
4. Question
The disease of eye in which crystalline lens becomes hazy or even opaque due to development of membrane over it is :
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Question 5 of 30
5. Question
Angle of incidence is equal to the angle of reflection:
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Question 6 of 30
6. Question
Image formed by a plane mirror is:
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Question 7 of 30
7. Question
Reflection is:
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Question 8 of 30
8. Question
Splitting of light into its colours is known as:
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Question 9 of 30
9. Question
Which of the following is not a source of light:
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Question 10 of 30
10. Question
Which type of mirror is used to obtain a virtual, laterally inverted image and equal in size of an object ?
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Question 11 of 30
11. Question
The angle between incident ray and normal is called the angle of:
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Question 12 of 30
12. Question
The lens present in eye is:
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Question 13 of 30
13. Question
Kaleidoscope is based on the pattern of:
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Question 14 of 30
14. Question
When two mirrors are placed parallel to each other, and a candle is placed in the centre of the mirrors no. of images will be formed.
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Question 15 of 30
15. Question
The difference in the colour of the eye is due to difference in:
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Question 16 of 30
16. Question
Beam of light striking the reflecting surface is called:
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Question 17 of 30
17. Question
Beam of light, bounced back by the surface after falling on it is called
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Question 18 of 30
18. Question
Band of seven colours is called:
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Question 19 of 30
19. Question
Rainbow is formed after rain due to
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Question 20 of 30
20. Question
Front bulged part of the eyeball is called:
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Question 21 of 30
21. Question
Visually impaired people can read and write using:
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Question 22 of 30
22. Question
The amount of light entering the eye is regulated by:
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Question 23 of 30
23. Question
The focal length of the eye-lens is changed by:
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Question 24 of 30
24. Question
The human eye forms the image of an object at its:
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Question 25 of 30
25. Question
Far point of a normal human eye is situated at:
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Question 26 of 30
26. Question
The least distance of distinct vision for a young adult with normal vision is:
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Question 27 of 30
27. Question
The near point at the age of 60 years is:
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Question 28 of 30
28. Question
The massage of image formation is convfeyed to the brain by:
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Question 29 of 30
29. Question
A person who cannot see the distant objects is said to be suffering from:
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Question 30 of 30
30. Question
A person who cannot see the near by objects is said to be suffering from:
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