An atom is initially 6.00 eV above its ground state
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
An atom is initially 6.00 eV above its ground state. As it returns to the ground state it emits two photons, one with wavelength 400 nm and another with wavelength 700 nm. Assuming no other energy exchanges occur, what is the wavelength of the third photon that must be emitted for energy to be conserved?
(a) 620\,\text{nm}
(b) 1.10\,\mu\text{m}
(c) 1.24\,\mu\text{m}\;(1240\,\text{nm})
(d) 280\,\text{nm}