Atoms And Nuclei Question 230

Question: If a proton and anti-proton come close to each other and annihilate, how much energy will be released [DCE 1999; 2003]

Options:

A) 1.5×1010J

B) 3×1010J

C) 4.5×1010J

D) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

Mass of proton = mass of antiproton =1.67×1027kg=1amu Energy equivalent to 1 amu=931 MeV

So energy equivalent to 2 amu =2×931 MeV

=1862×106×1.6×1019 =2.97×1010J

=3×1010J .



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