PHYSICS · Multi-part · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A dentist employs a small, front-coated concave mirror to inspect a patient’s tooth. The mirror’s focal point is located 2.0 cm in front of the reflective surface. During an examination the mirror is held 1.0 cm from the surface of the tooth, which has a vertical extent of 4.0 mm.
(a) Determine the distance between the image of the tooth and the mirror. State clearly whether the image forms in front of or behind the mirror surface.
(b) Calculate the height of the tooth’s image produced by the mirror.
(c) Identify whether the image is real or virtual and whether it is upright or inverted. Justify your classification by citing appropriate sign conventions.
(d) Express the enlargement of the tooth as a percent increase relative to the actual tooth height.