Half life period of a sample is 30min its decay fraction at instant t1 is 4/5 and decay fraction at - Physics - Dual Nature Of Radiation And Matter

Question

Half life period of a sample is 30min its decay fraction at instant
t1 is 4/5 and decay fraction at instant t2 is 9/10 then (t2-t1)
interval is

Zaid Mustaq Bhat · Accepted Answer

Half life period of a sample is 30min.its decay fraction at instant t1 is 4/5 and decay fraction at instant t2 is 9/10 then (t2-t1) interval is