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Question
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)
Options:
A .  (2/3) × Cd (L - nH) × √(2gh)
B .  (2/3) × Cd (L - 0.1nH) × √(2g) × H3/2
C .  (2/3) × Cd (L - nH) × √(2g) × H²
D .  (2/3) × Cd (L - nH) × √(2g) × H5/2
Answer: Option B

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