किस औद्योगिक क्षेत्र को लोकप्रिय रूप से 'भारत का रूर' कहा जाता है?

Consider the following statements regarding Lösch's Theory of Industrial Location: 1. He disregarded spatial variations in production costs by holding them constant. 2. He treated each function as having a separate range, threshold, and hexagonal hinterland. 3. His theory is also known as the 'Area-Cost Curve Theory'. 4. He used Isocost lines and maps to indicate the optimum location. Select the correct answer using the codes given below:

According to Weber's theory of industrial location, if an industry has a Material Index greater than 1, the most cost-effective location for the industry will be: