An electromagnetic radiation has an energy of 13.2 keV. Then the radiation belongs to the region of
Answer & explanation
Correct answer: option 4
Energy of a photon $E = \frac{hc}{λ}$
$∴ \, wavelength \, λ=\frac{hc}{E}$
$=\frac{6.6×10^{-34}×3×10^8}{13.2×10^3×1.6×10^{-19}}$
$= 0.9375 × 10^{-10} \, m$
$ = 1 \, Å$
Wavelength range of X-rays is from 10-11 m to 10-8 m (0.1 Å to 100 Å).
Therefore, the given electromagnetic radiation belongs to the X-ray region of electromagnetic spectrum.