engineering recuitment TSSPDCL Junior Lineman 2023 Mock Test Electrician and Wireman Light and Illumination Illumination
A lamp giving out 1200 lm in all directions is suspended 8 m above the working plane. Calculate the illumination at a point on the working plane 6 m away from the foot of the lamp.
1
1.232 lm/m2
2
0.76 lm/m2
3
1.858 lm/m2
4
0.5 × 103 lm/m2