According to Graham's law, at a given temperature the ration of 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))^(½)`
B. `(M_(A)//M_(B))(P_(A)//P_(B))^(½)`
C. `(P_(A)//P_(B))(M_(B)//M_(A))^(½)`
D. `(M_(A)//M_(B))(P_(B)//P_(A))^(½)`

Explanation

According to Graham's law
`(r_(1))/(r_(2))sqrt((M_(2))/(M_(1)))xx(P_(1))/(P_(2))` .