Solve the given problem:
 
1. Calculate the energy produced when \(1kg\) of substance is fully converted into energy.

[Note: \(C\ =\) \(3 \times{10^8}\) \(ms^{-1}\)]

According to Einstein's mass-energy equivalence,
 
E=i×ii
 
On substituting the given values in the above formula, we get
 
E=i×i×ii
 
=i×ii \(J\)