The activity of a sample of a radioactive material is A, at time t1 and A2 at time t2 ( t2 >t1). If its mean life T, then at time t1 and A2 at time t2 ( t2 >t1). If its mean life T The activity of a sample of a radioactive material is A then September 14, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related