Q 12-13-052JEE MainJEE Main 2024 (9 Apr, Shift 1)Easy
The energy equivalent of $1\ \text{g}$ of substance is:
Answer: (B) $5.6\times10^{26}\ \text{MeV}$
$$E = mc^2 = 10^{-3}\times(3\times10^8)^2 = 9\times10^{13}\ \text{J}$$
$$E = \frac{9\times10^{13}}{1.6\times10^{-13}}\ \text{MeV} \approx 5.6\times10^{26}\ \text{MeV}$$
Solution by Sreeraj P, M.Sc Physics