Reciprocal ranging is done
- Awhen stations are far apart and not intervisibleCorrect
- Bwhen stations are far apart but intervisible
- Cwhen stations are intervisible but line is longer than the chain length
- Dwhen stations are intervisible but line is shorter than the chain length
Solution
Concept
Reciprocal ranging
Step-by-step solution
1. Reciprocal ranging is used when the end stations are not intervisible because of intervening high ground.
Explanation
Two ranging persons align each other.
Why the other options are wrong
Intervisible stations use direct ranging.
Shortcut
Not intervisible → reciprocal.
Correct answer: A) when stations are far apart and not intervisible