Correct Answer - Option 3 : 1
Concept:
Void ratio (e):
Void ratio is usually defined as the ratio of the volume of voids to the total volume of soil solid.
Porosity (n):
Porosity is defined as the ratio of the volume of voids to the total volume of the soil.
The relationship between void ratio and porosity are as follows:
\(\rm{e=\frac{n}{1-n}\; and\; n=\frac{e}{1+e}}\)
Calculation:
η = Porosity = 0.5
From the above equation;
\(e = \frac{n}{{1 - n}}\)
\(e = \frac{0.5}{{1 - 0.5}}\)
e = 1
