Q .     The ratio of momenta of an electron and an alpha particle which are accelerated from rest by potential difference of 100 V is:

MHCET 2011
A

`1`

B

`\sqrt{\frac{2m_e}{m_{\alpha}}}`

C

`\sqrt{\frac{m_e}{m_{\alpha}}}`

D

`\sqrt{\frac{m_e}{2m_{\alpha}}}`

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