Qstnid -Ii-5-the Equation E = Pc Is Valid - 42: Photoelectric Effect And Wave Particle Duality - Neet-xii-physics

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NEET-XII-Physics

42: Photoelectric Effect and Wave Particle Duality

with Solutions - page 2

Qstn# ii-5 Prvs-Qstn Next-Qstn

#5
The equation E = pc is valid
(a) for an electron as well as for a photon
(b) for an electron but not for a photon
(c) for a photon but not for an electron
(d) neither for an electron nor for a photon
digAnsr: c
Ans : (c) for a photon but not for an electron
The equation E = pc is valid for a particle with zero rest mass. The rest mass of a photon is zero, but the rest mass of an electron is not zero. So, the equation will be valid for photon, and not electron.
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