First slide
Electromagnetic spectrum

The energy of the em waves is of the order of 15keV. To which part of the spectrum does it belong?


 As λ=hcE

Where the symbols have theri usual meanings.

 Here, E=15keV=15×103 V and hc=1240eVnm


As the wavelength range of X -rays is from 1 nm to 10-3 so this wavelength belongs to X -rays.



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