The meeting point of vertical axis, horizontal axis and line of sight of a theodolite is called
AOptical centre
BMeta center
COrtho center
DInstrumental centre
AOptical centre
BMeta center
COrtho center
DInstrumental centre
Related Questions:
What will come in the place of A and B, respectively in the given double displacement reaction?
A+B -----> AgBr + KNO_3