Water flows at a rate of 10m³ /s in a rectangular channel

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Water flows at a rate of 10m³ /s in a rectangular channel 3 m wide. The critical depth of flow is

1. 1.13 m
2. 2 m
3. 1.45 m
4. 1.04 m

Correct Option: D

Critical depth, y_c =		Q²		^1/3
		gB²

=		10²		^1/3	= 1.04m
		9.8³ × 3²