At equilibrium , number of atoms disintegrating at two different stages are in the ratio of 1: 10 . It half life of first stages is 15 minutes , half life of second stage would be

Options

A. 150 min
B. 15 min
C. 1.5 min
D. 30 min

Answer

A

Explanation

`(N_(A))/(N_(B))=((t_(1//2))A)/((t_(1//2))B)`
`N_(A)//N_(B)=1//10, (t_(1//2))_(A)=15` min
`(t_(1//2))_(B)=15xx10=150` min