A line Joining the optical centre of the object glass and the Centre of the eyepiece is known as
AAxis of telescope
BAxis of level tube
CFundamental line
DLine of collimation
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Related Questions:
The law states that in laminar flow in a saturated soil, the velocity is directly proportional to the hydraulic gradient is called:
The effective length of a compression member of length L held in position and restrained in direction at one end and effectively restrained in direction but not held in position at the other end, is
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The international nautical mile is same as :
The dip of a magnetic needle at equator is