Which of the following statements is/are false for Tacheometry? i. It is a method of finding the distances and elevations simultaneously. ii. It is not suitable in the case of hilly terrain
- AOnly (i)
- BOnly (ii)Correct
- CBoth (i) and (ii)
- DNeither (i) nor (ii)
Solution
Concept
Characteristics and suitability of tacheometric surveying
Formula
NONE
Step-by-step solution
1. Tacheometry is an optical surveying technique used to determine horizontal distances and elevation differences simultaneously. 2. It is especially useful and convenient in rough or hilly terrain where chaining is difficult or impractical. 3. Therefore, statement ii (claiming it is not suitable for hilly terrain) is false. Answer: B
Explanation
Tacheometry is an optical surveying technique that allows the simultaneous measurement of horizontal distances and vertical elevations using a transit theodolite fitted with stadia hairs. This method is especially useful and highly efficient in rough, broken, or hilly terrain where direct chaining or leveling is difficult or impractical. Because statement ii is false while statement i is true, option B is the correct choice.
Why the other options are wrong
A) Statement (i) is true as tacheometry simultaneously measures horizontal distances and elevations. C) Statement (i) is true, so both statements are not false. D) Statement (ii) is false because tacheometry is specifically very suitable for hilly terrain.
Shortcut
Tacheometry is highly suitable for hilly terrain where direct chaining is difficult.
Common mistake
Selecting option D or C by wrongly believing that tacheometry is unsuitable for hilly terrain.
Correct answer: B) Only (ii)