Q. Visible spectrum of the light has a wavelength in the range of:A. 1000 to 4000 Ao B. 4000 to 7000 Ao C. 7500 to 12500 Ao D. 12500 to 30000 Ao 82. Luminous flux is: (Solved)
1. the rate of energy radiation in the form of light waves
2. the part of light energy radiated from light source
3. measured in lux
4. both a and c
- b. the part of light energy radiated from light source