Question

One atomic mass units are equivalent to ___$MeV$ energy?

Answer 1

1 atomic mass unit is converted into energy by using E =mc² (here c = speed of light)
Now $E=1.66\times {10}^{-27}\times (3\times {10}^8{)}^{2}joules$

If we divide above result by electronic charge we get energy in electron volt. Now if we further divide it by million, the result will be $931MeV$.