Practice questions

$4.$ An X$-$ray photon of energy $25\mathrm{.}0$keV collides with a stationary electron. The scattered photon has energy $23\mathrm{.}3$keV.

a$.$ Calculate the energy of the recoil electron.

b$.$ Calculate the wavelength change of the photon.

c$.$ Determine the angle through which the photon is scattered.

$5.$ A photon of energy $20$keV is scattered at an angle of $130$ off a stationary electron.

a$.$ Calculate the wavelength of the incident and the scattered photon.

b$.$ Calculate the energy of the recoil electron.

a$.$ Outline how the presence of a maximum at $2\mathrm{.}97{10}^{-11}m$ supports the particle model of electromagnetic radiation.

$6.$ In a Compton scattering experiment, a beam of $x-$rays

b$.$ Calculate the angle at which scattered X$-$ray of wavelength $2\mathrm{.}50{10}^{-11}m$ is incident at a carbon photons are observed.

target. The graph shows the intensity spectrum of

c$.$ Determine the magnitude of the momentum of scattered X$-$rays observed at a particular angle. recoil electrons.