A photon behaves as if it had a mass equal to:
Correct answer: B. hf/c2
- A. hf/c
- B. hf/c2
- C. c2/hf
- D. hfc
Explanation
Using the equations E = hf Where E is the energy, h is Planck's constant, and f is the frequency Also the equation E = mc2 Where E is the energy, m is the mass, and c is the speed of light. E = E mc2 = hf m = hf/c2
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About Dawn of Modern Physics
Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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