At time t=0, activity of a radioactive substance is 1600 Bq, at t=8 s activity remains 100 Bq. Find the activity at t=2 s. activity of a radioactive substance is 1600 Bq at t=8 s activity remains 100 Bq. Find the activity at t=2 s. At time t=0 June 7, 2021 Category: Chapter 13 - Nuclei , MTG NEET Physics , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related