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      Question

      Inactive Nitrogen and Argon gases are usually used in

      electric bulbs in order to
      A Increase the intensity of light emitted Correct Answer Incorrect Answer
      B Increase the life of the filament Correct Answer Incorrect Answer
      C Make the emitted light coloured Correct Answer Incorrect Answer
      D Make the production of bulb economical Correct Answer Incorrect Answer

      Solution

      The inert gas within the bulb prevents the filament from evaporating. Thus, it increases.ย 

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