Physics - Modern Physics Question with Solution | TestHub

${\lambda }_{\min }=hc/eV$ is halved when $V$ is doubled, so (B). Characteristic wavelengths are target properties and do not change, so (A) is false. Shorter ${\lambda }_{\text{min }}$ means more penetrating X-rays, (C). Power $VI$ rises, so the target heats faster, (D).