1.

Decay constants of two radio-active samples A and B are 15x and 3x zospectively. They have equal number of initial nuclci. The ratio of the number of nuclei left in A and B after a time 1/(6x) is :

Answer»

`E^(-2)`
e
`e^(2)`
`e^(-1)`

Solution :`N_(1)=N_(01e^(-lambda_(1)t))=N_(0)e^(-15 XX 1/(6x)=N_(0)e^(-5//2)`
`N_(2)=N_(02e^(-lambda_(2)t)=N_(0)e^(-3x xx 1/(6x)=N_(0)e^(-1//2)`
`N_(1)/N_(2)=e^(-2)`


Discussion

No Comment Found

Related InterviewSolutions