At sections, where a river is narrow and shallow, the current will be faster while at sections where the river is wide and deep, the current will be slower. Explain.

At sections, where a river is narrow and shallow, the current will be

1.	At sections, where a river is narrow and shallow, the current will be faster while at sections where the river is wide and deep, the current will be slower. Explain.
Answer» Solution :According to principle of CONTINUITY for an incompressible fluid,`A_(1)v_(1)=A_(2)v_(2)` It means that, at sections where the area of cross section (TAKEN NORMAL to flow) is SMALLER, the velocity is HIGHER and vice versa.