Question

write the observations of focal length of a convex lens is increased when kept in water​

Answer 1

Answer:

When the lens is dipped to a height which is greater than the focal length of lens in air, we are able to see the image. Showing that focal length of the lens has increased water. vii) From this we conclude that the focal length of a convex lens is increased when it is kept in water.

Answer 2

Explanation:

When the lens is dipped to a height which is greater than the focal length of lens in air, we are able to see the image. Showing that focal length of the lens has increased water. vii) From this we conclude that the focal length of a convex lens is increased when it is kept in water.