Physics · Optics and Illumination
सोडियम वाष्प लैंप (sodium vapour lamp) की प्राथमिक पीली उत्सर्जन तरंगदैर्ध्य (wavelength) लगभग कितनी होती है?
- 1673 nm
- 2326 nm
- 3254 nm
- 4589 nm✓
सही उत्तर देखें
589 nm
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