The figure that is not | Atomic Structure | JEE MAIN 2020

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JEE MAIN 2020

02-09-20 S1

Question

The figure that is not a direct manifestation of the quantum nature of atoms is

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Solution

Explanation of variation of internal energy of Ar with temperature (Straight line and $\mathrm{U} \propto \mathrm{T}$ ) is not a direct manifestation of the quantum nature of atoms. While explanation of absorption spectrum, nature of emission of radiation from hot bodies (black body radiation) and photoelectric effect are direct manifestation of the quantum nature of atoms.

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