The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)

Question

A. Q = (2/3) Cd × b × √(2g) × (H2 - H1)

B. Q = (2/3) Cd × b × √(2g) × (H2 ^1/2 - H1 ^1/2)

C. Q = (2/3) Cd × b × √(2g) × (H2 ^3/2 - H1 ^3/2)

D. Q = (2/3) Cd × b × √(2g) × (H2 ² - H1 ²)

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Accepted Answer

C. Q = (2/3) Cd × b × √(2g) × (H2 ^3/2 - H1 ^3/2)