Question

The rest mass of a proton is $938MeVc^{- 2}$ . The energy of a proton at rest is,

• A. $9.38J$
• B. $9.38 \times 10^8 \times 3 \times 10^{8^2}\,J$
• C. $9.38\times 10^{8}eV$
• D. $9.38 \times 10^8 \times 3 \times 10^{8^2} \,eV$

Answer 1

Answer: (C)

$938\, MeV\,c^{- 2}=m$
$E=mc^{2}=938\,MeV=9.38\times 10^{8}\,eV$