If a proton and anti-proton come close to each other and annihilate, how much energy will be released?

Question

If a proton and anti-proton come close to each other and annihilate, how much energy will be released?, 1 .5 × 10 - 10 J, 3 × 10 - 10 J, 4 .5 × 10 - 10 J, 2 × 10 - 10 J

MARKS App · Accepted Answer

Mass of proton = mass of anti-proton = 1 .67 × 10 - 27 kg = 1 amu Energy equivalent to amu = 931 MeV . So, energy equivalent to 2 amu = 2 × 931 MeV = 1862 × 10 6 × 1.6 × 10 - 19 = 2 .97 × 10 - 10 J ≈ 3 × 10 - 10 J

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