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प्रश्न
Write two characteristic features observed is photoelectric effect which supports the photon pictures of electromagnetic radiation ?
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उत्तर
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.
संबंधित प्रश्न
Plot a graph showing the variation of photoelectric current with intensity of light. The work function for the following metals is given:
Na: 2.75 eV and Mo : 4.175 eV.
Which of these will not give photoelectron emission from a radiation of wavelength 3300
\[A^\circ\] from a laser beam? What happens if the source of laser beam is brought closer?
Photoelectric effect is ______.
Lenard observed photoelectric effect using
What are photoelectrons?
Which plate was exposed to ultraviolet light in Lenard's procedure?
What happened to the current in Lenard's experiment when the ultraviolet light was removed?
What happened to the electroscope when ultraviolet light fell on the zinc plate?
What were the particles emitted from the zinc surface in Hallwachs' experiment?
What occurs when incident radiation is below the threshold frequency for a metal?
Which metals generally require ultraviolet radiation for photoelectric emission?
