If the focal length of the object glass is 25 cm and the distance from – McqOptions

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1.	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» C. 0.6

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