New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A fluorescent tube is a type of gas discharge lamp that

    uses which gas to produce visible light?
    A Cerium Correct Answer Incorrect Answer
    B Mercury Correct Answer Incorrect Answer
    C Nihonium Correct Answer Incorrect Answer
    D Radon Correct Answer Incorrect Answer

    Solution

    A fluorescent tube operates by passing an electric current through mercury vapor, which emits ultraviolet light. This light then causes a phosphor coating on the inside of the tube to glow, producing visible light.

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