An atom is excited to an energy level 7.50 eV above the ground state
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
An atom is excited to an energy level 7.50 eV above the ground state. It first emits a photon of wavelength 450 nm and then a second photon that brings it to the ground state. What is the energy (above the ground state) of the intermediate level populated after the first emission?
(a) 10.3eV
(b) 4.74eV
(c) 2.76eV
(d) 7.50eV