Question

T
1) How do you venity experimentally that the
focal length of a convex lens appears to be
increased when it is keptin water?​

Answer 1

Answer:

Procedure :

i) Take a cylindrical glass tumbler whose height is much greater than the focal length of the lens and fill it with water.

ii) Keep a black stone at the bottom of the vessel. ...

iii) From this we conclude that the focal length of a convex lens is increased when it is kept in water.

Explanation:

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