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ntA plane ref...

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ntA plane reflecting surface is placed in x-z plane, such that it's reflecting surface is normal to y-axis. A ray of light PO is incident at origin O. Find a unit vector along the reflected ray, if the coordinates of point P aren nt(i) (a,a,0);. (ii) (a,b,0);. (iii) (a,b,c)n

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