question_answer

Two radioactive substances X and Y emit a current \[\alpha \]and \[\beta \]particles respectively. Their          disintegration constants are in the ratio 2:3. To have equal probabilities of getting emission of a and p particles, the ratio of number of atoms of X to that of Y at any time instant is

A)  \[2\text{:}3\]                

B)  \[3:2~\]         

C)  \[e:1\]              

D)  \[\left( e-1 \right):1\]