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How the rays of light in plane wavefront...

How the rays of light in plane wavefront, diverging spherical wave front and coverging psherical wavefront, represented ?

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It is important to note the rays of light are always perpendicular to wavefront as shown in the figures below:

Figures (a), (b) and (c) show the rays of light corresponding to plane wavefront, diverging sperical wavefront (SWF) and converging psherical wavefront respectively.
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