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When an eye is focussed on a distant obj...

When an eye is focussed on a distant object, the focal length of the eye lens is ..........

A

maximum

B

minimum

C

half of its minimum

D

half of its maximum

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The correct Answer is:
A
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KUMAR PRAKASHAN-THE HUMAN EYE AND THE COLOURFUL WORLD-OBJECTIVE QUESTIONS AND ANSWERS (Choose the correct option)
  1. Which light gets scattered maximum due to atmosphere?

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  2. Which light has minimum speed in glass (prism)?

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  3. When an eye is focussed on a distant object, the focal length of the e...

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  4. How many surfaces does a triangular prism have ?

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  5. The wavelengths of violet, yellow and red light are lambda(v), lambda(...

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  6. For normal vision, the far point is at…………. distance.

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  7. For normal vision, the near point is ............

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  8. Which phenomenon can explain the advance sunrise and the delayed sunse...

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  9. Which of the following phenomena cannot be explained by scattering of ...

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  10. The base of an equilateral triangle ABC is BC. When it is arranged in ...

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  11. The Sun appears white in afternoon. The reason is ..........

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  12. Sea water at more depth appears blue. The reason is …….....

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

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

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  15. The rainbow on the moon …

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

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

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

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

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

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