A man stands with his nose 8 cm from a concave shaving mirror of radius 32 cm. The distance from the mirror to the image of his nose is:

Name: A man stands with his nose 8 cm from a concave shaving mirror of radius 32 cm. The distance from the mirror to the image of his nose is:
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The mirror formula is 1/f = 1/v + 1/u. The focal length f is half the radius, so f = 16 cm. The object distance u is -8 cm (since it's in front of the mirror). Solving for v gives v = 16 cm.

A Man Stands with His Nose 8 Cm from a Concave