The half life of a radioactive substance is 20 minutes. The time taken between 50% decay and 87.5% decay of the substance will be The half life of a radioactive substance is 20 minutes. The time taken between 50% decay and 87.5% decay of the substance will be June 7, 2021 Category: Chapter 13 - Nuclei , MTG NEET Physics , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related