If the energy of a photon is 10,eV,then its m | vedclass

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(A) The energy of a photon is given by $E = 10\,eV$.We know that the momentum $p$ of a photon is related to its energy $E$ by the formula $p = \frac{E

Vedclass · Accepted Answer

$5.33 	imes 10^{-27}\,kg\,m/s$

Vedclass · Answer

(A) The energy of a photon is given by $E = 10\,eV$.We know that the momentum $p$ of a photon is related to its energy $E$ by the formula $p = \frac{E}{c}$,where $c$ is the speed of light.First,convert the energy from $eV$ to Joules: $E = 10 	imes 1.6 	imes 10^{-19}\,J = 1.6 	imes 10^{-18}\,J$.The speed of light $c = 3 	imes 10^8\,m/s$.Now,calculate the momentum: $p = \frac{1.6 	imes 10^{-18}}{3 	imes 10^8} = 0.533 	imes 10^{-26}\,kg\,m/s$.This can be written as $p = 5.33 	imes 10^{-27}\,kg\,m/s$.Therefore,the correct option is $A$.

If the energy of a photon is $10\,eV$,then its momentum is

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