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Railways RRB (Assistant Loco Pilot) Solved Paper-2014

  • question_answer
    An apparatus for viewing objects lying above the eye level of the observer and whose direct vision is obstructed is known as-

    A)  Photometer                  

    B)  Periscope

    C)  Planimeter                   

    D)  Spectrometer

    Correct Answer: B

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