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Which one of the following pairs of char...

Which one of the following pairs of characteristics of light is best explained by assuming that light can be described in terms of photons?

A

Photoelectric effect and the effect observed in Young's experiment

B

Diffraction and the formation of atomic spectra

C

Polarization and the photoelectric effect

D

Existence of line spectra and the photoelectric effect

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The correct Answer is:
D
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