In my text book, I came across this question:
What is the equation used to determine the shortest wavelenght of the bremsstrahlung spectrum of x-rays?
The answer was:
λ = hc/eV. (Where: h is planck constant, c is the speed of light, e is the electron charge and V is the voltage across the cathod and the anode in Coolidge tube.
I thought the above equation is used to determine the shortest wavelength of the charecteristic spectrum of x-rays, so why it is used here? Could some ome clarify things for me, please?