If a photon is ejected from an atomic nucleus with twice the energy of another photon, how do the frequencies of the two photons compare? Neutrinos are created in a nuclear reactor all of the time....

If a photon is ejected from an atomic nucleus with twice the energy of another photon, how do the frequencies of the two photons compare?

Neutrinos are created in a nuclear reactor all of the time. What percentage of the energy do they carry away, and where does this energy go?