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When the ciliary muscles contract, the e...

When the ciliary muscles contract, the eye lens becomes ......... and its focal length………. This enables us to see nearby objects clearly.

A

thick, decreases

B

thick, increases

C

thin, increases

D

thin, decreases

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The correct Answer is:
A, C, D
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KUMAR PRAKASHAN-THE HUMAN EYE AND THE COLOURFUL WORLD-OBJECTIVE QUESTIONS AND ANSWERS (Choose the correct option)
  1. Sea water at more depth appears blue. The reason is …….....

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  2. When the ciliary muscles are relaxed, the eye lens becomes ......... a...

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  3. When the ciliary muscles contract, the eye lens becomes ......... and ...

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  4. The rainbow on the moon …

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  5. In dispersion of white light due to a triangular glass prism, the devi...

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  6. Which lens from the following, should a person suffering from near-sig...

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  7. Which lens is used by a person suffering from far-sightedness?

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  8. Which of the following is true for near sightedness?

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  9. Which of the following is true for far- sightedness?

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  10. Where is the image formed in the eye of a person suffering from far si...

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  11. A person has a defect of eye vision. His near point is 40 cm. It means...

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  12. A person has a defect of vision. His far point is 1.5 m. It means...

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  13. Out of the following, which light is deviated minimum in the dispersio...

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  14. Which light has maximum speed in glass?

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  15. Which ray of light is present exactly at the middle of the spectrum ob...

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  16. The lens in human eye is a ...........

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  17. For persons suffering from near-sightedness the power of the lens used...

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  18. For a person suffering from .......... the power of the lens used in s...

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  19. Which phenomenon/phenomena of light is / are involved in the formation...

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  20. ......... light from the following is least scattered by fog, dust and...

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