An internal focussing type surveying telescope, may be focussed by the – McqOptions

MCQOPTIONS

1.	An internal focussing type surveying telescope, may be focussed by the movement of
A.	all the above.
B.	objective glass of the telescope
C.	convex-lens in the telescope
D.	concave lens in the telescope
Answer» D. concave lens in the telescope

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