Question

A photon is an elementary particle that has no mass but does have momentum like all other particles. What is the momentum of a photon determined by?

1) p = E/c = (h *f)/c
2) p = E * c = (h * f)/c
3) p = E + c = (h * f)/c
4) p = E * c = (h * f) * c

Answer 1

The momentum of a photon is determined by the equation p = E / c = (h * f) / c, where p represents momentum, E represents energy, c is the speed of light, h is Planck's constant, and f represents the frequency of the photon.

Step-by-step explanation:

The momentum of a photon is determined by the equation p = E / c = (h * f) / c, where p represents momentum, E represents energy, c is the speed of light, h is Planck's constant (6.626 × 10^-34 J.s), and f represents the frequency of the photon. This equation shows that momentum is directly proportional to the energy and frequency of the photon, and inversely proportional to the speed of light.