Question

A ray of light gets refracted ----------- while passing through a lens.
once
twice
thrice
​

Answer 1

Answer:

twice is the right answer

Answer 2

Refraction is the change in direction of light when it passes from one medium to another. ... The light rays are refracted after passing through the lens. It is of two types, convex lens and concave lens. Convex lens: This lens bulges out at the centre and is thinner at the edges, i.e. the two sides.

hence once is example