A) \[7.2\times {{10}^{10}}\frac{{{\text{C}}^{\text{2}}}}{\text{N-}{{\text{m}}^{\text{2}}}}\]
B) \[8.86\times {{10}^{-9}}\frac{{{\text{C}}^{\text{2}}}}{\text{N-}{{\text{m}}^{\text{2}}}}\]
C) \[1.02\times {{10}^{-12}}\frac{{{\text{C}}^{\text{2}}}}{\text{N-}{{\text{m}}^{\text{2}}}}\]
D) None of these
Correct Answer: A
Solution :
Permittivity of water \[\varepsilon ={{\varepsilon }_{0}}K\] \[=8.85\times {{10}^{-12}}\times 81\] \[=7.2\times {{10}^{-10}}{{C}^{2}}/N\text{-}{{\text{m}}^{2}}\]
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