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      Question

      Night photography and photopraphy in mist and fog are

      possible using –
      A ultra-violet radiation Correct Answer Incorrect Answer
      B infra-red radiation Correct Answer Incorrect Answer
      C microwave radiation Correct Answer Incorrect Answer
      D gamma radiation Correct Answer Incorrect Answer

      Solution

      Infrared is used in night vision equipment when there is insufficient visible light to see. Night vision devices operate through a process involving the conversion of ambient light photons into electrons which are then amplified by a chemical and electrical process and then converted back into visible light.

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