Physics · Illumination
The lamp efficiency of an electrical light source is formulated as:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Power input in Watt / Luminous flux in Candela
- 2Luminous flux in Lumen / Power input in Watt✓
- 3Luminous flux in Lumen × Power input in Watt
- 4Specific consumption × Luminous flux in Lumen
Correct answer
Luminous flux in Lumen / Power input in Watt
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