Difference between radius of curvature and principal axis.

Academic Physics NCERT Class 10

Radius of curvature (R) $-$ It is the radius of the sphere from which the mirror is formed.

Principal axis $-$ It is a line passing through the center of the surface of a lens or spherical mirror and through the centers of curvature of all segments of the lens or mirror.

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Updated on: 10-Oct-2022

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