Einstein's energy mass equivalence relation say that if the whole given mass is converted to energy then it would be
![E = mc^2](https://img.qammunity.org/2019/formulas/physics/middle-school/4u98r4bgw5r2asxhatg6u5yyoprjrm4nad.png)
where
m = mass in kg
c = speed of light in m/s
this is the origination of quantum physics and by this formula we can relate the dual nature of light and particle
So correct relation above will be
![E = mc^2](https://img.qammunity.org/2019/formulas/physics/middle-school/4u98r4bgw5r2asxhatg6u5yyoprjrm4nad.png)