लक्स की SI इकाई है – McqOptions

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1.	लक्स की SI इकाई है
A.	रोशनी की तीव्रता
B.	चमकदार दक्षता
C.	चमकदार प्रवाह
D.	चमकदार तीव्रता
Answer» B. चमकदार दक्षता

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