The energy of an EM wave is of the order of 15 keV. To which part of the spectrum does it belong?
The correct option is C X-rays
Here, E= 15KeV
hc = 1240eV nm
∴ λ=1240 eV nm15×103 eV=0.083 nm
As the wavelength range of X−rays is from 1 nm to 10−3 nm, this wavelength belongs to the X−rays part of the spectrum.