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The positron is a fundamental particle w...

The positron is a fundamental particle with the same mass as that of the electron and with a charge equal to that of an electron but of opposite sign. When a positron and an electron collide, they may annihilate each other. The energy corresponding to their mass appears in two photons of equal energy. Find the wavelength of the radiation emitted. [Take : mass of electron `= (0.5//c^(2))MeV` and `hc = 1.2 xx 10^(-12) MeV-m`, where h is the Planck's constant and c is the velocity of light in air.

Text Solution

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The correct Answer is:
`2.48 xx 10^(-12) m`
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