The radius of curvature of a concave mirror is

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

Problem

The radius of curvature of a concave mirror is −36 cm-36\,\text{cm}. Calculate its focal length. (a) +18 cm+18\,\text{cm} (b) −18 cm-18\,\text{cm} (c) −9 cm-9\,\text{cm} (d) −36 cm-36\,\text{cm}

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