Physics, asked by checkoutpri1862, 1 year ago

Verify that the minimum energy a photon must have to create an electron-positron pair in presence of a stationary nucleus of mass m is 2mc2(1+m/m) where m is electron rest mass

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Answered by anjuyogeshyadav

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A body cools from 91℃ to 89℃ in 5 minutes when room temperature is 20℃. then it will cool from 71℃ to 69℃ in

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