Explore BrainMass

Ray tracing and the mirror equation

Shaving/makeup mirrors typically have one flat and one concave (magnifying) surface. You find that you can project a magnified image of a light bulb onto the wall of your bathroom if you hold the mirror 1.5 m from the bulb and 3.5 m from the wall.

(a) What is the magnification of the image?
(b) Is the image erect or inverted?
(c) What is the focal length of the mirror?

Solution Preview

a) recall the formula for magnification from a mirror:

M = h_i / h_o = - d_i / d_o

h_i and h_o are the heights of the ...

Solution Summary

With formulas and exlanations, the problems are solved.