Q.Which of the following applications does not need ultraviolet lamps?

  • ACar lighting
  • BMedical purposes
  • CBlue print machines
  • DAircraft cockpit dashboard lighting
Correct Answer : (A)

Car lighting

Hints :

Car lighting does not need ultraviolet lamps.


Luminous efficiency of a fluorescent tube is


Candela is the unit of which of the following?

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