Question

You are given a spherical mirror and wish to determine its properties. You place an object on its axis, 41.7 cm in front of it, and discover that the mirror creates a virtual image located 12.7 cm from the mirror Find the mirror's focal length Number cm Calculate the mirror's radius of curvature. Number cm If it can be determined, is the mirror concave or convex? O Convex O Concave O Cannot be determined

Answer 1

since the virtual image formed in a distance less than object, so the mirror must be convex.

u = - 41.7 cm

v = 12.7 cm

using mirror formula

1/f = 1/v + 1/u

1/f = 1/ 12.7 - 1/ 41.7

f = 18.26 cm

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R = 2 f = 36.52 cm

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mirror is convex

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