engineering recuitment RVUNL Technician III Mock Test Series 2025 Utilization of Electrical Energy Illumination
A light source having an intensity of 400 candle power is fitted with a reflector so that it directs 70 percent of its light along a beam having a divergence angle of 5 degrees. Total flux emitted along the beam is:
1
1600 / π
2
1120 π
3
1600 π
4
1120 / π
5
1600