Q191
Two points A and B were 1000 m apart across a river. the following readings were taken with one level: Level near station Reading on A B A 1.5 2.8 B 1.4 2.6 The error in the collimation adjustment of the level was + 0.002m per 100m. Determine the correction for refraction.
Two points A and B were 1000 m apart across a river. the following readings were taken with one level:
The error in the collimation adjustment of the level was + 0.002m per 100m. Determine the correction for refraction.
| Level near station | Reading on | |
|---|---|---|
| A | B | |
| A | 1.5 | 2.8 |
| B | 1.4 | 2.6 |
A.
0.0450
B.
0.0485
AnswerC.
0.4850
D.
0.1850
Answer: Option B
Solution
Answer: Option B
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