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Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 2 (Q.No. 25)
Surveying
25.
Pick up the correct statement from the following :
in astronomical telescope, the rays from the object after refraction at the objective are brought to a focus before entering the eyepiece to produce a real inverted image in front of the eye piece
in Galileo's telescope, the rays from the object get refracted at the objective and are intercepted by the eyepiece before a real image is formed
a line passing through the optical centre of the objective traversing through the eyepiece, is called line of sight
the line of sight which passes through the intersection of cross-lines marked on a diaphragm fixed in front of the eyepiece in a plane at right-angles to the axis, is called the line of collimation
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.
Viney bhatia said:   3 years ago
No, option C is not correct. Please clarify it.
Hardik Darji said:   6 years ago
Eyepiece plays no part in defining the line of sight.
LOKESH said:   7 years ago
I think C is cot valid.
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