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A conve mirror products 3 times enlarged image of an it object placed 10cm in front of it. calculate radius of curvature ​

Answer»

→ Lateral magnification = -3→ Distance of object = -10cm→ Type of mirror : concaveTo FIND :→ Radius of CURVATURE of mirror.Formula :↗ Mirror formula :☢ 1/u + 1/v = 1/f = 2/R↗ Lateral magnification :☢ m = - v / UV denotes distance of imageu denotes distance of objectf denotes FOCAL lengthR denotes radius of curvaturem denotes magnificationCalculation :☞ m = - v / u☞ (-3) = - v / (-10)☞ v = -30cm→ 1/u + 1/v = 2/R→ 1/(-10) + 1/(-30) = 2/R→ (-3 - 1)/30 = 2/R→ -4/30 = 2/R→ -2/30 = 1/R→ R = -15cm



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