1.

The ratio of momenta of an electron and an \[\alpha -\]particle which are accelerated from rest by a potential difference of 100 V is                                  [MNR 1994; RPET 1997]

A. 1
B. \[\sqrt{\frac{2{{m}_{e}}}{{{m}_{\alpha }}}}\]
C. \[\sqrt{\frac{{{m}_{e}}}{{{m}_{\alpha }}}}\]
D. \[\sqrt{\frac{{{m}_{e}}}{2{{m}_{\alpha }}}}\]
Answer» E.


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