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Positron is a particle which has the same mass as an electron . But it has positive charge on it . When electron and positron combine, they annihilate each other with the release of energy in the form of two very high energy photons.

if the energy released on annihilation of an electron and a positron is 0.5 Mev(Million electron volts),find the frequency of the wave which is carrying this photon.

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1 Answer 1

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Hint :- Use Plank's Relation,
$$E=h \nu\ $$
where $h$ is the plank's constant = $6.626 \times\ 10^{-34}$ and proceed...

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