Question

A parallel beam of light falling on a convex lens converges on a point on the

principal axis at a distance of 20 cm from the lens. What will happen in the

following cases: (i) A concave lens of same focal length is kept in contact with this

lens (ii) another convex lens of same focal length is kept in contact with this lens.

Explain with diagram.​

Answer 1

Answer:

on the point of focus right