In a thermonuclear reaction, the total initial mass is 5.02 x \(10^{-{2}{7}}\)kg and the total final mass is 5.01 x \(10^{-{2}{7}}\)kg. The energy released in the process is
[c = 3.0 x \(10^8\) ms-1]
A
9.0 x 10-13J
B
9.0 x 10-12J
C
9.0 x 10-11J
D
9.0 x 10-10J
Verified Correct Answer: A.
Physical Principles & Numerical Solution
In thermonuclear reactions,
Energy = ∆mC\(^2\)
∆m = Change in Mass
C = Speed of light
∴ 5.02 x 10\(^{-27}\) - 5.01 x 10\(^{-27}\) x [3 x 10\(^8\)]\(^2\)
0.01 x 10\(^{-27}\) x 9 x 10\(^{16}\)
E = 9.0 x 10\(^{-13}\)J
Source: Myschool Past Questions Archive (Record #717)