Chapter-10|Wave Optics|NCERT 12th Physics: Proof for laws of Reflection at a Plane Surface (By Huygens’ Wave theory): When parallel rays comes from infinity at any instant a ray touches point A and at that time another ray touches point B, At that time first wavefront AB will be formed and it will be perpendicular to […]
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Chapter-10|Wave Optics|NCERT 12th Physics: Huygens’ Principle: Huygens’ principle gives the shape of the wavefront at any time and allows us to determine the shape of the wavefront at a latter time. According to Huygens’ Principle (I) Every point on a wavefront acts as source of secondary disturbances which emits their own wavelets called secondary wavelets.
Chapter-10|Wave Optics|NCERT 12th Physics: According to huygens light is a mechanical wave (require a medium). Huygens supposed the existence of a hypothetical medium called “luminiferous Ether” which filled the entire space through which Sun rays comes on Earth. This medium was supposed to be massless with extremely high elasticity and very low density. Wavefront: A
