Question

What is the focal length of a concave mirror of radius of curvature 30 cm?

Answer 1

Answer:

15 cm

Explanation:

= 1/2 X 30 = 15cm.

hope this helps you

Answer 2

Explanation:

$\huge \colorbox{lightblue}{answer}$

Given, Radius of curvature=30 cm

Focal length=R/2

=30/2

= 15 cm

KEEP SMILING SIR.