33. Geometric Optics

You determine a concave mirror to have focal length . If you submerge the mirror in water ($n=1.33$), what would be the new focal length?

A concave makeup mirror has a focal length of . What is the mirror’s radius of curvature?

For the following ray diagram, which ray is drawn incorrectly?

An object is placed from a concave mirror, producing a real image $15.0\(\operatorname{\mathrm{cm}\)}$ from the mirror. What is the focal length of the mirror?