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A convex lens is immersed in a liquid, whose refractive index is equal to the refractive index of the material of the lens. Then its focal length will

a)

Decrease

b)

Become zero

c)

Become infinite

d)

Increase



Question ID - 153012 | SaraNextGen Top Answer

A convex lens is immersed in a liquid, whose refractive index is equal to the refractive index of the material of the lens. Then its focal length will

a)

Decrease

b)

Become zero

c)

Become infinite

d)

Increase

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

Given,

The focal length of convex lens in liquid  is given by

Its focal length will become infinite.

127 votes


127