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Question
Write two characteristic features observed is photoelectric effect which supports the photon pictures of electromagnetic radiation ?
Solution
The two characteristics features observed in photoelectric effect which support the photon pictures of electromagnetic radiation one:
(a) All photons of light of a particular frequency ν, or wavelength λ, have the same energy `E (=hv = (hc)/lambda)` and momentum `P(=h/lambda)`whatever the intensity of radiation may be. The increase in intensity of the radiation implies an increase in the number of photons crossing a given area per second,
(b) Photons are electrically neutral and are not deflected by electric and magnetic fields.
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