Problem 5.289

Find the wavelength of X-ray radiation if the maxımum kinetic energy of Compton electrons is $T_{\max }=0.19 \mathrm{MeV}$ .

\lambda=(2 \pi \hbar / m c)\left(\sqrt{1+2 m c^{2} / T_{\max }}-1\right)=3.7 \mathrm{pm}

Thermal Radiation. Quantum Nature of Light.