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The focal length of objective is chagned...

The focal length of objective is chagned by:

A

pupil

B

retina

C

ciliary muscles

D

iris.

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MBD-THE HUMAN EYE AND THE COLOURFUL WORLD-EXAMPLE
  1. Which defect of the eye is shown in the figure given below?

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  2. The approximate least distance of distinct vision of normal eye is…. .

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  3. The focal length of objective is chagned by:

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  4. A person suffering form short sightedness cannot see objects beyond 1....

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  5. The far point of normal human eye is …. .

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  6. In human eye the image of object is formed at:

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  7. Light entering the eye is mostly refracted by:

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  8. Most insensitive part of the eye is called:

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  9. Focal length of the eye lens can be adjusted by action of:

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  10. Light entering the eye is mostly refracted by:

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  11. Least distance of distinct vision of a normal eye is:

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  12. Least distance of distinct vision of a normal eye is:

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  13. When an object is placed beyond centre of curvature of a concave mirro...

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  14. The least distance of distnct vision is ………… .

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  15. Far point of normal human eye is….. .

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  16. In human eye,image of an object is formed at …… .

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  17. The ability of eye-lens to adjust its focal length is called……. .

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  18. A short-sighted person cannot see the ….. Object distinctly.

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  19. The shaped cells present in retina respond to the intensity of light.

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  20. helps in regulating the amount of light entering the eye.

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