Question
Question: When an electron – positron pair annihilates, the energy released is about –...
When an electron – positron pair annihilates, the energy released is about –
A
0.8 × 10–13 J
B
1.6 × 10–13 J
C
3.2 × 10–13 J
D
4.8 × 10–13 J
Answer
1.6 × 10–13 J
Explanation
Solution
E = 1.02 MeV = 1.02 × 106 × 1.6 × 10–19 J= 1.6 × 10–13 J