The thickness of a sharp crested weir is kept less than

[A].	one-third of the height of water on the sill
[B].	one-half of the height of water on the sill
[C].	one-fourth of the height of water on the sill
[D].	two-third of the height of water on the sill
[E].	none of these.

Answer: Option B

Explanation:

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