Question

Name two factors on which the focal length of a lens depends.

Answer 1

Answer:

The focal length of a lens depends on the (i) radii of curvatureof its surfaces and (ii) on the index of refraction of the material the lens is made from.

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Answer 2

Explanation:

Focal length depend on :

i It depend on radius of curvature.

ii. It depend on refrective index of material of lens

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