A photon of wavelength `lambda` is absorbed by an electron confined to a box of length `sqrt(35hlambda//8mc)`. . As a result, the electron makes a transition from state k = 1 to the state n. Subsequently the electron transits from the state n to the state m by emitting a photon of wavelength `lambda'=1.85lambda`. Then

Options

A. n = 4, m = 2
B. n = 5, m =3
C. n = 6, m = 4
D. n = 3, m = 1

Answer

C