The photon is the particle, which has:
Correct answer: C. No rest mass and no charge
- A. Infinite rest mass
- B. Rest mass but no charge
- C. No rest mass and no charge
- D. A and C are correct
Explanation
Photons are massless particles with no rest mass. They also do not carry any electric charge. They are the quanta of light and other forms of electromagnetic radiation, propagating through space as both particles and waves.
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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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