A concave makeup mirror is designed to produce a virtual image that is two and a...
A concave makeup mirror is designed to produce a virtual image that is two and a half times the size of the object when the distance between the object and the mirror is 16.0 cm. What is the focal length of the mirror?
Homework Answers
v = 2.5 u = 2.5 * 16 cm
v = 40 cm
Using mirror formula
1/f = 1/v + 1/u
1/f = 1/40 - 1/16
Focal length, f = 26.67 cm
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