The word radiation means:
Correct answer: A. To propagate
- A. To propagate
- B. Stay at rest
- C. Mass less objects
- D. Charged object
Explanation
Radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. The one that fits best as an option according to the definition is 'to propagate'.
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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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