Surveying
The scale of a vertical photograph of focal length ‘f’ taken from height of ‘H’ metres above M.S.L., at a point of reduced level ‘h’, is

f/H
f/(H + h)
(H - h)/f
f/(H - h)

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Surveying
Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ?

error due to inaccurate graduation
error due to eccentricity of verniers
error due to displacement of station signals
error due to wrong adjustment of line of collimation and trunnion axis

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