Practicing Success
In equation $P=Ec^{-1}$, where P is momentum, E is energy and c is the speed of light. In which of the following options, this equation is valid: |
for an electron only for a photon but not for an electron for an electron as well as for a photon neither for an electron nor for a photon |
for a photon but not for an electron |
The correct answer is Option (2) → for a photon but not for an electron |