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Q: A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at :

  • 1
    518 nm
  • 2
    1035 nm
  • 3
    325 nm
  • 4
    743 nm
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Answer : 4. "743 nm"
Explanation :

Answer: D) 743 nm Explanation: 1λ=1λ1+1λ2 1355=1680+1λ2 1λ2=680-355680×355 ⇒λ2=743nm.

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