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…

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 $\displaystyle \lambda_{\text {min }}$ is the smallest possible wavelength of X-ray in the spectrum, the variation of $\displaystyle \log \lambda_{\text {min }}$ with $\displaystyle \log \mathrm{V}$ is correctly represented in :