A concave mirror has a radius of curvature of 36cm. At what distance from the mirror should an object be placed to give a real image three times the size of...

Assessment: JAMB UTME - Physics - 1992 Subject: Physics

Question 1 Report

A concave mirror has a radius of curvature of 36cm. At what distance from the mirror should an object be placed to give a real image three times the size of the object?
Answer Details
F =  u v u + v

v = 3u

18 =  3 u × u 3 u + u

u = 24cm

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