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Class 10 Science Chapter 11 The Human Eye And The Colourful World Quiz 4 (20 MCQs)

Quiz Instructions

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1. How many surface does a triangular prisam have?
2. Angle of deviation will be maximum for ..... colour
3. The image formed on the retina of the human eye is
4. Power of accommodation of eye(max. variation in power of eye lens) of a normal eye is about
5. When light travels through a prism it spits the white light into ..... colours
6. This is used to separate white light into colors.
7. The deflection of light by minute particles and molecules of the atmosphere in all direction is called ..... of light.
8. Rods help in ..... vision
9. The muscular diaphragm that controls the size of the pupil is
10. For donation eyes must be removed within ..... hours after death.
11. Why is a normal eye not able to see clearly the objects placed closer than 25 cm?
12. The optic nerve cells that are more sensitive to bright light and help in detailed central vision are called
13. The lens becomes ..... to focus nearby objects
14. Light enters the eye through a thin membrane called the
15. The period between the actual sunset and the apparent sunset is approximately ..... minutes?
16. Why is the component of colour in a rainbow can be seen when light passes through a glass prism?
17. Which of the following colour has the least wavelength?
18. Following is far-sightedness
19. The air layer of atmosphere whose temperature is less than the hot layer behave as optically
20. For persons suffering from near-sightedness the power of the lend used in spectacles is .....
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