Physics

Physics

Problem

A convex mirror has a focal length of +15 cm+15\,\text{cm}. What is its radius of curvature? a) −15 cm-15\,\text{cm} b) +30 cm+30\,\text{cm} c) +7.5 cm+7.5\,\text{cm} d) −30 cm-30\,\text{cm}
Intuitive explanation

A convex mirror's focal length and radius of curvature are linked by a simple geometric relationship—the focal point sits exactly halfway between the mirror's surface and its center of curvature. Since you're given the focal length, you just need to use the mirror equation that connects these two distances to find the radius.

Intuitive explanation

A convex mirror's focal length and radius of curvature are linked by a simple geometric relationship—the focal point sits exactly halfway between the mirror's surface and its center of curvature. Since you're given the focal length, you just need to use the mirror equation that connects these two distances to find the radius.

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