जॉइन Examsbookउत्तर : 3. "intensity of illumination"
Lux is the SI unit of5
प्र: Lux is the SI unit of
- 1luminous fluxfalse
- 2luminous efficiencyfalse
- 3intensity of illuminationtrue
- 4luminous intensityfalse
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उत्तर : 3. "intensity of illumination"
व्याख्या :
Answer: C) intensity of illumination Explanation: The lux (lx) is the SI derived unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square meter.

