Problem

The ratio of momentum of a proton and an

\alpha

-particle which are accelerated from rest by a potential difference of 200 V.

m_p

and

m_\alpha

are masses of proton and

\alpha

-particles : a.

\sqrt{\frac{2m_p}{m_\alpha}}

\sqrt{\frac{m_p}{2m_\alpha}}

\frac{m_p}{2m_\alpha}

\frac{2m_\alpha}{m_p}