engineering recuitment RVUNL Technician III Mock Test Series 2025 Utilization of Electrical Energy Illumination
If the distance between the light source and the surface is reduced to half, the illumination on the surface will
1
reduce to half of the original.
2
reduce to one fourth of the original.
3
increase to double of the original.
4
increase to four times of the original.
5
reduce to one fifth of the original.