Three fourth of the active decays in a radioactive sample decay in 3/4 sec. The half-life of the sample is Three fourth of the active decays in a radioactive sample decay in 3/4 sec. The half-life of the sample is June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter 14 - Nuclear Physics and Radioactivity , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related