Luminous flux is:
A. The rate of energy radiation in the form of light waves
B. The part of light energy radiated from light source
C. Measured in Lux
D. Both a and c
Answer:A
Luminous flux is:
A. The rate of energy radiation in the form of light waves B. The part of light energy radiated from light source C. Measured in Lux D. Both a and c