engineering recuitment DVC Junior Engineer Mock Test 2024 Utilization of Electrical Energy Illumination
State the Lambert's law for Illumination.
1
The illumination of a surface at any point is dependent upon the cube of cosine of the angle between the line of flux and the normal at that point.
2
The illumination of a surface at any point is dependent upon the cosine of the angle between the line of flux and the normal at that point.
3
The illumination of a surface at any point is inversely proportional to the cosine of the angle between the line of flux and the normal at that point.
4
The illumination of a surface at any point is dependent upon the square of cosine of the angle between the line of flux and the normal at that point.