Question

Explain Huygen's principle of secondary wavelets and on the basis of this principle establish the law of Refraction or Reflection ​

Answer 1

Answer:According to Huygens principle, every point on the wave front AB is a source of secondary wavelets. At an instant, the wavelet to reach A' from B, then BA' = ct. ... Then, A'B' is the new wave front in the denser medium. The rays 1', 2' and 3', normal to the wavefront AA', are refracted rays.

Explanation:

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