Question

What is quantum theory?

Answer 1

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here is your answer,
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PLANCK’S QUANTUM THEORY:

==>When a black body is heated, it emits thermal radiations of different wavelengths or frequency. To explain these radiations, Max Planck put forward a theory known as Planck’s quantum theory. The main points of quantum theory are

●Substances radiate or absorb energy discontinuously in the form of small packets or bundles of energy.

●The smallest packet of energy is called  quantum . In case of light the quantum is known as photon .

●The energy of a quantum is directly proportional to the frequency of the radiation. E ∝ ν (or) E = hν where ν is the frequency of radiation and h is Planck’s constant having the value 6.626 X 10–27erg – sec or 6.626 X 10–34 J–sec.

●A body can radiate or absorb energy in whole number multiples of a quantum hν, 2hν,3hν………..nhν. Where ‘n ' is the positive integer.

●Neils Bohr used this theory to explain the structure of atom.


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# NIKKY