A concave mirror has a radius of curvature of (magnitude given)

PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

A concave mirror has a radius of curvature of

30\,\text{cm}

(magnitude given). What is its focal length with the proper sign according to the Cartesian convention? (a)

+15\,\text{cm}

(b)

-30\,\text{cm}

(c)

-15\,\text{cm}

(d)

+60\,\text{cm}