The pressure at exit of contraction will be nearly to

Question

Water flows through a vertical contraction from a pipe of diameter d to another of diameter of d/2 Inlet velocity at inlet to contraction is 2 m/s and pressure 200 kN/m2. If height of contraction measures 2m, the pressure at exit of contraction will be nearly to  

(A) 192 kN/m²            (B) 150 kN/m²

(C) 165 kN/m²             (D) 175 kN/m²