A nucleus of mass number A originally at rest emits an α-particle with speed v. The daughter nucleus recoils with a speed A nucleus of mass number A originally at rest emits an α-particle with speed v. The daughter nucleus recoils with a speed November 28, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 31 - Nuclei , Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related