Question

State whether given statement is True or False
When a point object is at the principal focus of a convex lens, it forms a parallel beam of light after refraction.

• A. True
• B. False

Answer 1

The correct option is A True

Answer is A.

First Principal Focus is the point on the principal axis of the lens, the rays starting from which (convex lens) or appear to converge at which (concave lens) become parallel to principal axis after refraction from the lens. Hence, the statement is true.
Below is the diagrammatic representation.