7)Complete the following concave and convex problems A) A child holds a candy ba

Question

7)Complete the following concave and convex problems A) A child holds a candy bar 26.0cm in front of a convexmirror and notices the image is half the size, what is the radiusof curvature of the mirror? 7)Complete the following concave and convex problems A) A child holds a candy bar 26.0cm in front of a convexmirror and notices the image is half the size, what is the radiusof curvature of the mirror?

Explanation / Answer

the image is half the size => -q/p = 1/2 =>   q = -13 cm => 2/R = 1/p + 1/q = 1/26 - 1/13 = -1/26 => R = -52 cm the negative sign base on the invention of the sign => we knowthe radius is r = 52 cm

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