Question

Find the focal length of convex mirror whose radius is 72cm

Answer 1

Answer :

• Focal length = R/2

here, R = 72cm

• F = 72/2
• F = 36cm

Answer 2

$\small\red{\sf { Solution : }}$

Focal length - R/2

Given , R = 72cm

F = 72 / 2

F = 36