Explain planck’s quantum theory of radiations.
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Answer:
According to Planck’s quantum theory,
Different atoms and molecules can emit or absorb energy in discrete quantities only. The smallest amount of energy that can be emitted or absorbed in the form of electromagnetic radiation is known as quantum.
The energy of the radiation absorbed or emitted is directly proportional to the frequency of the radiation.
Plank’s quantum theory
Meanwhile, the energy of radiation is expressed in terms of frequency as,
E = h ν
Where,
E = Energy of the radiation
h = Planck’s constant (6.626×10–34 J.s)
ν= Frequency of radiation
Interestingly, Planck has also concluded that these were only an aspect of the processes of absorption and emission of radiation. They had nothing to do with the physical reality of the radiation itself. Later in the year 1905, famous German physicist, Albert Einstein also reinterpreted Planck’s theory to further explain the photoelectric effect. He was of the opinion that if some source of light was focused on certain materials, they can eject electrons from the material. Basically, Planck’s work led Einstein in determining that light exists in discrete quanta of energy, or photons.
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