1.

The staff reading at a distance of 80 m from a level with a bubble at centre is 1.31 m. When the bubble is moved 5 divisions out of the centre, the reading is 1.39 m. Then the angular value of one division of the bubble is:

A. 28.78 sec
B. 41.25 sec
C. 14.25 sec
D. 25.05 sec
Answer» C. 14.25 sec


Discussion

No Comment Found