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Name the four parts labelled as 1,2,3 an...

Name the four parts labelled as 1,2,3 and 4 in the given figure.

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1. Retina. 2. Ciliary muscles. 3. pupil 4. Eyes lens
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ZEN PUBLICATION-THE HUMAN EYE AND THE COLOURFUL WORLD-ZEN ADDITIONAL QUESTIONS SECTION - SHORT ANSWER TYPE QUESTIONS - I
  1. What would have been the colour of the sky, in the absence of atmosphe...

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  2. What is meant by scattering of light ? Use this phenomenon to explain ...

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  3. Name the four parts labelled as 1,2,3 and 4 in the given figure.

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  4. In a human eye, name the following parts. (i) A thin membrane which ...

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  5. How are we able to see nearby and also the distant objects clearly ?

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  6. What is meant by accomodation of the eye ?

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  7. Name the parts of the eye which help in this phenomena and state how t...

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  8. Explain the changes taking place in the cilary muscles when we focus o...

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  9. How do the iris and pupil respond to (i) dim and (ii) bright light ?

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  10. Name the screen on which an image is formed in the eye. What is the ra...

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  11. How can change of size of eyeball be one of the reason for (i) myopia ...

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  12. Explain giving reason the type of lens used to correct the defect of v...

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  13. Name the part of eye where the image is formed in a nornaml human eye....

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  14. What is hypermetropia or far-sightedness ? Name the type of lens used ...

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  15. What is presbyopia ? Write two causes of this defect.

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  16. What are bifocal lenses ? Who needs to use them ?

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  17. A person is able to see objects clearly only when these are lying at a...

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  18. What is dispersion ? What happens when light is passed through a glass...

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  19. A beam of white light falling a glass prism split up into seven colour...

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  20. List the three phenomena of light responsible for the formation of rai...

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