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 October 14, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related