Question

2
Write two characteristic features observed in photoelectric effect which support the photon picture of electromagnetic radiation.
Draw a graph between the frequency of incident radiation (v) and the maximum kinetic energy of the electrons emitted from the surface of a photosensitive material. State clearly how this graph can be used to determine (i) Planck’s constant and (ii) work function of the material.​

Answer 1

Answer:

Explanation:

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 ( = h v = h c λ ) and momentum P ( = h λ ) whatever the intensity of radiation may be.

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