Physics

Problem

A beam of

0.030\,\text{nm}

X-rays scatters from free electrons. For one photon, the scattered wavelength is measured to be

0.031\,\text{nm}

. Which of the following is closest to the scattering angle of this photon? (Electron Compton wavelength

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

.) a)

90^{\circ}

35^{\circ}

54^{\circ}

140^{\circ}