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A stone projected at angle ‘θ’ with horizontal from the roof of a tall building falls on the ground after three second. Two second after the projection it was again at the level of projection. Then the height of the building is (g = 10m/s2)–

(A) 5m 

(B) 25m 

(C) 20 m 

(D) 15m

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Best answer

Correct option (D) 15 m

Explanation:

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