Find the
a. maximum frequency, and
b. minimum wavelength of X-rays produced by 30 kV electrons.

Explanation

`V=30kV=30xx10^(3)V, K_("max")=eV=1.6xx10^(-10)xx30xx10^(3)`
a. `h upsilon=eV`
`upsilon=(e )/(h)V=(1.6xx10^(-19)xx30xx10^(3))/(6.62xx10^(-34))=7.25xx10^(18)Hz`
b. `v=upsilon lambda`
`lambda=(v)/(upsilon)=(3xx10^(8))/(7.25xx10^(18))=0.414xx10^(-10)m=0.0414xx10^(-9)m=0.0414 nm`