The Stage of River Carrying a Discharge of Q M7sec

Multiple Choice

The stage of river carrying a discharge of Q m7sec at a point is 10 m and slope of water surface is (1/4000) . The discharge of a flood at the same point and same stage of 10 m with a water surface slope of(l/1000) willbe

A) V2 Q m³/sec
B) 0.5 Q mVsec
C) 2 Q m³/sec
D) 4 Q m³/sec