If rate of diffusion of `A` is `5` times that of `B`, what will be the density ratio of `A` and `B` ?

Options

A. `1//25`
B. `1//5`
C. `25`
D. 4

Answer

A

Explanation

`r_(a)=5r_(b), (d_(a))/(d_(b))=[(r_(b))/(r_(a))]^(2)=((1)/(5))^(2)=(1)/(5)`