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A man of height 2 m walks at a uniform speed of 5 km/ hour away from a lamp post of 6 m height.

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A man of height 2 m walks at a uniform speed of 5 km/ hour away from a lamp post of 6 m height. His shadow length increases at the rate of

(A) 12.5 km/hour

(B) 2.5 km/hour

(C) 3 km/hour

(D) 3.5 km/hour

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1 Answer

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Best answer

Correct option: (B) 2.5 km/hour

Explanation: 

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