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Q: The electrical domestic tube light gives white fluorescent light because of

  • 1
    colision between molecules of filled gas under electric current
  • 2
    heavy current
  • 3
    vacuum inside the tube
  • 4
    falling of ultra violet rays on the white inner coating of the tube
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Answer : 4. "falling of ultra violet rays on the white inner coating of the tube"
Explanation :

Answer: D) falling of ultra violet rays on the white inner coating of the tube Explanation: The ultraviolet rays have high frequency and shorter wavelength are converted to visible white light with lower frequency and greater wave length

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