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2.(a) Define a wavefront. How is it different from a ray?(b) Depict the shape of a wavefront in each of the following cases.(i) Light diverging from point source.(ii) Light emerging out of a convex lens when a point source isplaced at its focus.(iii) Using Huygen's construction of secondary wavelets, draw adiagram showing the passage of a plane wavefront from adenser into a rarer medium. |
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Answer» this is IRRELEVANT QUESTION |
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