Question

21. The refractive index of glass with respect to air is 3/2
and that of water is 4/3. The radii of curvature of a
glass convex lens are 20 cm and 30 cm respectively
,
What will be the focal length of the lens (i) in air
(ii) in water?​

Answer 1

Answer:

ability of the year old boy and I have to be tui ki baat nhi hai kya kr rhi thi na to us to be tui amr ki tu no one can do it for you and your friends are you and reason I was a good time first time