A photon of wavelength strikes a free electron at rest

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Modern Physics · Modern 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}

(b)

70^{\circ}

(c)

62^{\circ}

(d)

28^{\circ}