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What job does the pupil of the eye do ?...

What job does the pupil of the eye do ?

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LAKHMIR SINGH & MANJIT KAUR-THE HUMAN EYE AND THE COLOURFUL WORLD -Exercise
  1. Where is the image formed in a human eye ?

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  2. What is the function of the lens in the human eye ?

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  3. What job does the pupil of the eye do ?

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  4. How does the eye adjust to take account of an increase in brightness ?

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  5. Name that part of the eye which is equivalent to the photographic film...

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  6. Which part of the eye cotains cells which are sensitive to light ?

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  7. Name two types of cells in the retina of an eye which respond to light...

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  8. State whether the following statement is true or false : The image f...

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  9. What is the principal function of the eye-lens ?

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  10. Where does the greatest degree of refraction of light occur in the eye...

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  11. What changes the shape of lens in the eye ?

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  12. What do the ciliary muscles do when you are focusing on a nearby objec...

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  13. What is the least distance of distinct vision for a normal human eye ?

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  14. What is the : (a) far point of a normal human eye ? (b) near point...

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  15. What is the range of vision of a normal human eye ?

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  16. Name the part of our eyes which helps us to focus near and distant obj...

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  17. Define the term "power of accommodation" of human eye.

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  18. Give the scientific names of the following parts of the eye : (a) ca...

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  19. Fill in the following blanks with suitable words : (a) Most of the r...

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  20. Why is normal eye not able to see clearly the objects placed closer th...

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