If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is
A. 0.1
B. 0.4
C. 0.6
D. 1.33
Answer: Option B
This Question Belongs to Civil Engineering >> Surveying
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Multiplying Constant : f/i
Additive Constant : f + d