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Atoms
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
B.
3 × 10-10 J
Mass of proton = mass of anti-proton
= 1.67 × 10-27 kg = 1amu
Energy equivalent to 1 amu = 931 MeV
So,
energy equivalent to 2 amu = 2 x 931 MeV
= 1862 × 106 × 1.6 × 10-19
= 2.97 × 10-10 J
energy equivalent to 2 amu = 3 × 10-10 J
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J.J. Thomson's cathode ray tube experiment demonstrated- that
Total energy of an electron in hydrogen atoms above 0 eV leads to
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