Suppose an Electron Is Confined in a One-Dimensional Box of Width

Multiple Choice

Suppose an electron is confined in a one-dimensional box of width L which is two times the Bohr's radius of 0.0529 nm.What is the wavelength of the photon when the electron makes a transition from n = 3 to the ground state?

A) 9.12 nm
B) 4.61 nm
C) 1.82 nm
D) 2.28 nm
E) None of these is correct.