Physics - Modern Physics Question with Solution | TestHub

Kinetic energy gained $=eV$, same for both. $p=\sqrt{2m\mathrm{KE}}$ has the same magnitude, but momentum is a vector and the electrons can move in different directions, so (B) is false. ${\lambda }_{dB}=h/p$ is the same. ${\lambda }_{\text{min }}=hc/eV$ depends only on $V$, not on the target, so it is the same on any target.