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  1. What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?

    2. A.
    Telegraph
    B.
    Radio
    C.
    Television
    D.
    Dishwasher

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    Answer : Option C

    Explanation :

    Zworykin invented both the tube (iconoscope) for transmission and the receiver (kinescope) in 1923 and 1924, respectively.

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