engineering recuitment ISRO Scientist Civil Mock Test Soil Mechanics and Foundation Engineering Well Hydraulics
The relationship between porosity (η), specific yield (Sy) and specific retention (Sr) of an unconfined aquifer is:
1
\({S_y} + {S_r} = \eta \)
2
\({S_y} + \eta = {S_r}\)
3
\({S_r} + \eta = {S_y}\)
4
\({S_y} + {S_r} + \eta = 1\)