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The normal at a vertex (0,1,2) on a surface is (0,4,5). the light source is at (0,1, 4). the intensity of the light is (0.9,0,0.2). the diffuse co-efficient of the surface is (0.4, 1,0). what will the rgb colour of the vertex be? assume there is no specular, ambient or any other light reflected by the surface.

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