The speed of light in the vacuum is the same for all observers regardless of their relative motion or the motion of the source of the light", is the important postulate of:
Correct answer: C. Special theory of relativity
- A. Special conductivity
- B. Special resistivity
- C. Special theory of relativity
- D. General theory of relativity
Explanation
Special theory of relativity - Correct: Einstein's special theory of relativity states that the speed of light is constant for all observers, regardless of their motion or the motion of the source.
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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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