An atom in its ground state absorbs two photons: a photon with a wavelength of 102.6 nm and then a photon with a wavelength of 1875 nm. The atom then relaxes back to the ground state by emitting a single photon. What is the wavelength of the emitted photon?
(a) 18.38 nm
(b) 97.25 nm
(c) 108.5 nm
(d) 1772 nm
(e) 1977 nm
Answer: (b) 97.25 nm