As per Weber's Least Cost theory the lines joining the points of equal transport cost are called:

Question

Accepted Answer

According to Weber's Least Cost Theory, **Isotims** are lines joining points of equal transport cost.

Here's why Option 1 is correct and the others are incorrect:

*   **Option 1: Isotims (Correct)**: Isotims are fundamental to Weber's theory. They represent lines on a map connecting locations that have the same total transportation cost for a specific raw material or finished product. By mapping isotims for different inputs, Weber could determine the point of least transport cost, which would ideally be the location of the industry. The point where the total transport cost is minimized is where the isotims are closest together.

*   **Option 2: Isodopane (Incorrect)**: An isodopane is a line connecting points of equal total additional cost. In Weber's theory, it specifically refers to the line connecting points where the total transport cost increase is the same. It's used to determine the critical isodopane, which indicates the minimum cost increase required to move production away from the least-cost location due to labor cost advantages elsewhere. While related to Weber's theory, it doesn't directly represent lines of equal transport cost *before* considering labor cost variations.

*   **Option 3: Isotrans (Incorrect)**: The term "isotrans" is not a standard term used in Weber's Least Cost Theory or in economic geography in general. It doesn't have a defined meaning within this context.

*   **Option 4: Isohytes (Incorrect)**: Isohytes are lines on a map connecting points that receive the same amount of precipitation (rainfall). This term is used in meteorology and hydrology, and has no relevance to Weber's Least Cost Theory, which deals with transportation costs, labor costs, and agglomeration economies in industrial location.