Magnification:

$\overline{){\mathbf{m}}{\mathbf{=}}{\mathbf{-}}\frac{{\mathbf{s}}_{\mathbf{i}}}{{\mathbf{s}}_{\mathbf{o}}}}$

Mirror equation:

$\overline{)\frac{\mathbf{1}}{{\mathbf{s}}_{\mathbf{i}}}{\mathbf{+}}\frac{\mathbf{1}}{{\mathbf{s}}_{\mathbf{o}}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{f}}}$

m = 1.5

s_{o} = 12.0 cm

What is the focal length of a makeup mirror that produces a magnification of 1.50 when a person’s face is 12.0 cm away? Explicit show how you follow the steps in the Problem-Solving Strategy for Mirrors.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mirror Equation concept. You can view video lessons to learn Mirror Equation. Or if you need more Mirror Equation practice, you can also practice Mirror Equation practice problems.