The angle of intersection of the two plane mirrors of an optical square is______________?

Related Mcqs:

If the length of a chain is found to be short on testing, it can be adjusted by______________?

A. straightening the links B. removing one or more small circular rings C. closing the joints of the rings if opened out D. all of the above...

Theodolite is an instrument used for_________________?

A. tightening the capstan-headed nuts of level tube B. measurement of horizontal angles only C. measurement of vertical angles only D. measurement of both horizontal and vertical angles...

If the staff is not held vertical at a level¬ling station, the reduced level calculated from the observation would be_______________?

A. true R.L B. more than true R.L C. less than true R.L D. none of the above...

Sensitiveness of a level tube is designated by______________?

A. radius of level tube B. length of level tube C. length of bubble of level tube D. none of the above...

Benchmark is established by________________?

A. hypsometry B. barometric levelling C. spirit levelling D. trigonometrical levelling...