Question

What is the unit of luminous efficiency of an electrical bulb ?
(a) Watt
(b) Lumen
(c) Lumen/watt
(d) Flux​

Answer 1

Answer:

Lumen/watt is the answer

Answer 2

Answer:

lumens per watt

Luminous efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt in the International System of Units (SI).

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