Physics

Problem

A photon of wavelength

0.050\,\text{nm}

strikes a free electron at rest. The photon is scattered at

40^{\circ}

with a wavelength of

0.055\,\text{nm}

. Approximately what is the angle between the recoiling electron’s momentum and the original photon direction? a)

50^{\circ}

70^{\circ}

62^{\circ}

28^{\circ}