a) 1+n= 1/(1+e)
b) 1-n= 1/(1+e)
c) n= 1/e
d) n= 1/(1+e)
Answer: b
Explanation: The porosity n and void ratio e are given by,
e = Vv/Vs = n/(1+n)
n= Vv/V = e/(1+e)
n= e*(1-n)
So, 1-n=1/(1+e).
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