The change in the vertical stress in the soil mass estimated by Boussinesq's equation when Poisson's ratio of soil changes from 0.3 to 0.5 will be

The change in the vertical stress in the soil mass estimated by Boussi

1.	The change in the vertical stress in the soil mass estimated by Boussinesq's equation when Poisson's ratio of soil changes from 0.3 to 0.5 will be
A.	reduction by 30%
B.	increase by 50%
C.	reduction by 20%
D.	no change
Answer» C. reduction by 20%

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The change in the vertical stress in the soil mass estimated by Boussinesq's equation when Poisson's ratio of soil changes from 0.3 to 0.5 will be

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