An electron beam is accelerated by a potential difference V to hit a metallic target to produce X-rays. It produces continuous as well as characteristic X-rays. If λmin is the smallest possible wavelength of X-rays in the spectrum, the variation of log λmin with log V is correctly represented in :
Solution:
We have, eV = hν + K.E eV = hc/λmin + K.E log V + K.E = -log λmin Hence log V is inversely proportional to log λmin