Question

How does line spectra of atoms with reference to hydrogen prove the particle nature of light

Answer 1

Atomic Spectra. When atoms are excited they emit light of certain wavelengths which correspond to different colors. The emitted light can be observed as a series of colored lines with dark spaces in between; this series of colored lines is called a line or atomic spectra

Answer 2

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The light emitted by hydrogen atoms is red because, of its four characteristic lines, the most intense line in its spectrum is in the red portion of the visible spectrum, at 656 nm. ... If a hydrogen atom could have any value of energy, then a continuous spectrum would have been observed, similar to blackbody radiation.

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