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explain huygens principle second wave |
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Answer» According to Huygens's Principle every point on a propagating wavefront serves as the source of spherical secondary wavelets, such that the wavefront at some later time is the envelope of these wavelets. If the propagating wave has a frequency, f, and is transmitted through the medium at a speed, v, then the secondary wavelets will have the same frequency and speed. This principle is quite useful, for from it can be derived the laws of reflection and refraction |
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