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A target is located at a point P at a height of 10 m above the ground. A particle is to be projected from a point O on the ground to hit the target, where OP = 180 m. Let umin be the minimum possible velocity of projection.

(a) 56 m/s

(b) 49 m/s

(c) 42 m/s

(d) 35 m/s

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