According to Graham's law, at a given temperature, the ratio of the rates of diffusion `r_(A)//r_(B)` of gases `A` and `B` is given by

Options

A. `(P_(A)//P_(B)) (M_(A)// M_(B))^(1//2)`
B. `(M_(A) // M_(B)) (P_(A)// P_(B))^(1//2)`
C. `(P_(A) // P_(B)) (M_(B)// M_(A))^(1//2)`
D. `(M_(A) // M_(B)) (P_(B) // P_(A))^(1//2)`

Answer

C