Which principle is used in solar cells?
Correct answer: A. Photovoltaic Effect
- A. Photovoltaic Effect
- B. Charge
- C. Mass
- D. All of these
Explanation
Solar cells follow photovoltaic effect in which energy and momentum are conserved hence momentum is the answer.
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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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