Physics

Problem

A photon is back-scattered (

\theta =180^{\circ}

) from a free electron and emerges with a wavelength of

0.062\,\text{nm}

. What was the photon’s incident wavelength? (Electron Compton wavelength

=2.43\times10^{-12}\,\text{m}

.) a)

0.060\,\text{nm}

0.055\,\text{nm}

0.057\,\text{nm}

0.067\,\text{nm}