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Which one of the following phenomena is not explained by Huygens construction of wavefront?

1. Refraction
2. Reflection
3. Diffraction
4. Origin of spectra

Correct answer: Origin of spectra

Solution

Huygens' principle explains wave phenomena like refraction, reflection, and diffraction by considering the propagation of wavefronts. However, the origin of spectra is related to quantum mechanics and atomic transitions, which are beyond the scope of Huygens' wave theory.

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