The distance of vena- contracta from the orifice is approximately
A(3/4) diameter of the orifice
B(2/3) diameter of the orifice
C(1/4) diameter at a point
D(1/2) diameter at a point
A(3/4) diameter of the orifice
B(2/3) diameter of the orifice
C(1/4) diameter at a point
D(1/2) diameter at a point
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