Which of the following can penetrate the deepest ( explain)
a) 3mev electron
b) 10mev alpha
c) 0.1 mev auger
d) 400kev proton

3MeV electron

Explanation:

m_e={9.1\times 10^{-31}      m_α=4\times m_e    m_a={9.1\times 10^{-31}

m_p=1.67\times 10^{-27}

(a)  K.E. Energy of electron ==3MeV

=1.05\times10^{18}

(b) K.E. Energy of alpha particle ==10MeV

=0.88\times10^{18}

(c) K.E. Energy of auger particle ==0.1MeV

=0.035\times10^{18}

(d)  K.E. Energy of proton particle ==400keV

=0.766\times10^{14}

from (a),(b),(c),and (d) we can clearly say that the velocity of the electron is more so the penetration of the electron will be deepest.

you can cut your hand off if your not