The energy of the electromagetic wave is of the order of `15` keV. To which part of the spectrum dose it belong?

Options

A. Ultraviolet rays
B. `gamma`-rays
C. X-rays
D. Infrared rays

Answer

C

Explanation

As `lambda=(hc)/(E )`
where the symbols have their usual meanings.
Here, `E=15keV=15xx10^(3)V and hc=1240nm`
`therefore" "lambda=("1240 eV nm")/(15xx10^(3)eV)=0.083nm`
As the wavelength range of X - rays is from 1 nm to `10^(-3)` nm, so this wavelength belongs to X - rays.