An electromagnetic radiation has an energy of 13.2 keV . Then the radiation belongs to the region of

Question

An electromagnetic radiation has an energy of 13.2 keV . Then the radiation belongs to the region of\

Professor PC Thomas Classes · Answer

Given; $\mathrm{E}=13.2 \mathrm{keV}$\ $\lambda\left(ight.$ in $\left.\mathrm{A}^{\mathrm{o}}ight)=\frac{\mathrm{hc}}{\mathrm{E}(\mathrm{eV})}=\frac{12400}{13.2 	imes 10^{3}}=0.939 \mathrm{~A}^{\mathrm{o}}=1 \mathrm{~A}^{\mathrm{o}}$\ X-rays covers wavelengths ranging from about $10^{-8} \mathrm{~m}(10 \mathrm{~nm})$ to $10^{-13} \mathrm{~m}\left(10^{-4} \mathrm{~nm}ight)$\ An electromagnetic radiation of energy 13.2 keV belongs to X-ray region of electromagnetic spectrum.\