JIPMER2016PhysicsNuclear Physics
If a proton and anti-proton come close to each other and annihilate, how much energy will be released?
Options
- A1.5 10⁻¹⁰ ~J
- B3 10⁻¹⁰ ~J
- C4.5 10⁻¹⁰ ~J
- D2 10⁻¹⁰ ~J
Correct answer
B. 3 10⁻¹⁰ ~J
Step-by-step solution
Mass of proton = mass of anti-proton =1.67 10⁻²⁷ ~kg =1 amu Energy equivalent to 1 amu =931 MeV . So, energy equivalent to 2 amu =2 931 MeV aligned & =1862 10^6 1.6 10⁻¹⁹ & =2.97 10⁻¹⁰ ~J & =3 10⁻¹⁰ ~J aligned