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Answer : 2. "ज्योति फ्लक्स का"
ल्यूमेन (Lumen) किसका मात्रक है ?
5Q:
ल्यूमेन (Lumen) किसका मात्रक है ?
- 1ज्योति तीव्रता काfalse
- 2ज्योति फ्लक्स काtrue
- 3A और B दोनोंfalse
- 4इनमें से कोई नहींfalse
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Answer : 2. "ज्योति फ्लक्स का"
Explanation :
The SI unit of luminous flux is the lumen (lm). One lumen is defined as the luminous flux of light produced by a light source that emits 1 cd of luminous intensity over a solid angle of 1 sr. In other systems of units, luminous flux may have units of power.