In an experiment

PHYSICS · Subjective · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

In an experiment, several object and image distances are measured for a spherical mirror. A plot of

1/s_i

(vertical axis) versus

1/s_o

(horizontal axis) yields a best-fit line with slope −1.00 and a vertical-axis intercept of

0.050\,\text{m}^{-1}

. Determine the focal length of the mirror, including its sign.