While studying the standard algebraic proof of the mirror formula for a spherical mirror
PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
While studying the standard algebraic proof of the mirror formula for a spherical mirror, a student notices that certain simplifying assumptions are made.
(a) List any three such assumptions that are invoked during the proof.
(b) For each assumption listed in part (a), explain why it is considered valid for paraxial rays incident close to the principal axis.
(c) Describe how the Cartesian sign convention is embedded in the final form of the mirror equation that relates the object distance, image distance and focal length.