An object situated on other side of a river and inaccessible from plane table station can be located by

U.K. Combined A.E. Paper II 2012 / Uttarakhand Combined State A.E. Paper III 2007 / ESE 1995

⭕ A. radiation

⭕ B. intersection

⭕ C. traversing

⭕ D. resection

📚 Explanation:

Intersection is used to locate objects that are inaccessible from the plane table station (for example, across a river).

🔹 Intersection involves taking sights to the inaccessible point from **two (or more) known stations** whose positions are already plotted.
🔹 It is especially useful when the distance is large or direct measurement is obstructed or unsafe.

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👉 Therefore, the correct answer is: B. intersection

Key Points on Plotting Inaccessible Points:

• Intersection: Use two known stations to sight the inaccessible point.
• Radiation: Rays drawn from known station—suitable only when point is visible and accessible.
• Resection: Used to determine instrument position by sighting known points.