Question

What are the assumptions in Huygen’s theory? Deduce the laws of reflection and refraction using Huygen’s principle. ​

Answer 1

Answer:

The incident ray, reflected ray and the normal, to the interface of any two given mediums all lie in the same plane. We also know that the ratio of the sine of the angle of incidence and sine of the angle of refraction is constant

Explanation:

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Answer 2

Answer:

each point on wave front may be regarded as a source of secondary waves and that position of the wavefront at later time is determined by the envelope of these secondary waves: proposed in order to explain the fact that light travels in a straight line and casts sharp shadows