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Question Text
Case Study: Rohit wants to project a real, inverted and magnified image of a candle flame on a white screen using a convex lens of focal length 15 cm. (i) Where should he place the candle in front of the lens? (ii) What will be the nature of the image formed if he moves the candle to 10 cm from the lens? (iii) Calculate the image distance if the candle is at 20 cm from the lens.
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Tests real-world optical setup, sign convention, and lens formula 1/f = 1/v - 1/u.
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