The line of sight is also called _____ Options: A . &nbspline of telescope B . &nbspline of centre of axis C . &nbspline of collimation D . &nbspline of objective

The line of sight is also called ____

Question

The line of sight is also called _____

Options:

A . line of telescope

B . line of centre of axis

C . line of collimation

D . line of objective

Answer: Option C
Answer: (c).line of collimation

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Question 1. What is the line which passes through the optical centres of objective and eye piece?....

Question 2. The focal length of an objective varies with eyepiece.....

Question 3. The establishment of line of sight, therefore, involves the following two essential conditions, the real image must be f....the image must coincide with that of the cross hairs.

Question 4. The operation of forming or bringing the clear image of the object in the plane of cross hairs is known as ______....

Question 5. The theory of direct levelling neglects _____....

Question 6. Which of the following methods of spirit levelling is, levelling the object of which is solely to determine the differen....horizontal position of the points with respect to each other?

Question 7. Fly levelling is another name of _____....

Question 8. A level provides a vertical line of sight, a line tangential to a Level surface at the point where the instrument stands....a Level surface at the point where the instrument stands.

Question 9. What is the error in feet for precise levelling for benchmarks of widely distributed points?....

Question 10. What is the error in mm for rough levelling for reconnaissance or preliminary surveys?....

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