Question

Select the most appropriate word from the given box and fill in the following blanks.

refracted diameter converging power convex small concave dioptre diverging focal length two aperture

On passing through a lens, light is ______ twice, at the two surfaces of the lens.

Answer 1

On passing through a lens, light is refracted twice, at the two surfaces of the lens.

Explanation: 

When a light ray passes through a lens, it gets refracted at the first boundary entering the lens material and is refracted again at the second boundary exiting into the surrounding medium.