The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

The discharge through a small rectangular orifice is given by (where C

1.	The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)
A.	= Cd × a × 2gh
B.	= (2/3). Cd × a × h
C.	= (Cd × a)/√(2gh)
D.	= (3Cd × a)/√(2h)
Answer» B. = (2/3). Cd × a × h