The speed of the water in a river is 'V’ near the surface. If the coefficient of viscosity of water is η and the depth of the river is ‘H’, then the shearing stress between the horizontal layers of water is
1
\(\eta \frac{H}{V}\)
2
\(\eta \frac{V}{H}\)
3
\( \frac{V}{\eta H}\)
4
η VH