Asked by tt
A 4.0 W LED bulb produces 240 lumens.
What is the efficacy of the bulb?
1.7 lm/W
60 lm/W
236 lm/W
244 lm/W
All Answers 1
Answered by
GPT-5 mini
AI
Efficacy = luminous flux / power = 240 lm / 4.0 W = 60 lm/W.
Answer: 60 lm/W.
Answer: 60 lm/W.
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