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Discussion :: GATE Architecture and Planning

  1. An aircraft flying at an altitude of 5000 m above mean sea level takes aerial photographs of a flat terrain having an average elevation of 1000m above mean sea level. 
    The scale of photographs is 1:20000. The focal length of the camera (in cm) is
    2. A.
    15
    B.
    20
    C.
    25
    D.
    30

    View Answer

    Workspace

    View Answer

    Answer : Option B

    Explanation :

    -NA-

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