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Please give proper explanation of this ques.ans. all the 3 parts

Answer» MEASURE all distance with RESPECT to the position of convex lens. So, OBJECT distance, u = Position of convex lens - Position of candle flame = 50-12 = 38 cmSince, object is always left to the lens, hence it is taken negative, i.e., u = -38 cmSimilarly, image distance, v = position of the screen - position of the convex lens = 88 - 50 = 38 cmHope this information will clear your doubts about the topic.


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