17057. The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)

Cd x L2g [H1 – Ha]
Cd x L2g [H13/2 – Ha3/2]
Cd x L2g [H12 – Ha2]
Cd x L2g [H15/2 – Ha5
✅ The correct answer is option B.

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