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At what distance should an object be placed in front of a concave mirror of focal length 50cm so that an image of triple of its size is obtained?​

Answer»

75 cmExplanation:GIVEN,Focal LENGTH, f=50cmMagnification, m=2m= uv =2v=2uFrom mirror FORMULA,F1 = v1 + u1 f1 = 2u1 + u1u= 23f= 23×50 =75 cmObject Is placed at 75cm from the mirror



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