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radius of curvature question?
A 6.2 ft tall shopper in a department store is 18 ft from a convex security mirror. The shopper notices that his image in the mirror appears to be only 6.4 in. tall.
What is the mirror's radius of curvature in ft?
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- 1 decade agoFavorite Answer
1/V +1/U = 1/F; U = -18 and V = +[18/[(6.2*12)/6.4] =
1/1.55 - 1/18 = 1/F = 0.59028 or F = + 1.7 ft
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