A Trapezoidal canal is designed in alluvial soil using Lacey’s theory to fulfill the irrigation needs. The cultural command area of the canal is 3000 hectares. The peak discharge required in Rabi season is 3 m3/s and peak discharge required in Kharif season is 5 m3/s. If the mean size of the sediment particles is 0.3 mm. Then the hydraulic radius that should be adopted for the channel is about ________ .
1
0.67
2
0.83
3
1.23
4
1.08