Which one of the following phenomena is not explained by Huygen's construction of wavefront? (a) Refraction (b) Reflection (c) Diffraction (d) Origin of spectra

Answer: (d). Huygens' construction explains propagation effects: reflection, refraction, diffraction. The origin of spectra comes from emission and absorption by atoms (quantum transitions), which wave construction cannot explain. So the answer is (d) origin of spectra.

Which one of the following phenomena is not explained by Huygen's… | NEET 1988 (AIPMT)

Q29NEET 1988 · AIPMTEasy

Wave Theory, Wavefronts & Doppler Effect

Which one of the following phenomena is not explained by Huygen's construction of wavefront?

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Answer: (d)

Huygens' construction explains propagation effects: reflection, refraction, diffraction.
The origin of spectra comes from emission and absorption by atoms (quantum transitions), which wave construction cannot explain.
So the answer is (d) origin of spectra.

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