Critical depth at a section of a rectangular channel is

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Critical depth at a section of a rectangular channel is 1.5 m. The specific energy at that section is

1. 0.75 m
2. 1.0 m
3. 1.5 m
4. 2.25 m

Correct Option: D

y_c = 1.5 m

E_c =	3	y_c
	2

=	3	× 1.5 = 2.25 m
	2