A photon of wavelength 0.1 A is emitted by a helium atom as a consequence of the emission of photon. The KE gained by helium atom is A photon of wavelength 0.1 A is emitted by a helium atom as a consequence of the emission of photon. The KE gained by helium atom is June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 28 - Dual Nature of Radiation and Matter , Facebook Messenger WhatsApp Share this:TwitterFacebook Related