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[" A man of height 'h' is walking away f...

[" A man of height 'h' is walking away from a "],[" street lamp with a constant speed 'v'.The "],[" height of the street lamp is "3h." The rate at "],[" which of the length of the man's shadow is "],[" increasing when he is at a distance "10h],[" from the base of the street lamp is - "],[[" (A) "v/2," (B) "v/3],[" (C) "2v," (D) "v/6]]

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