यदि किसी region की arithmetic density 250 है और cultivated land total area का 20 प्रतिशत है, तो cultivated-land density कितनी होगी?
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C. 1250 व्यक्ति प्रति वर्ग किलोमीटर1250 persons per square kilometre
Simple Explanation
Cultivated land \(0.20A\) है। इसलिए cultivated-land density \(250/0.20=1250\) व्यक्ति प्रति वर्ग किलोमीटर cultivated land होगी। तीसरा विकल्प सही है। यह arithmetic density से पांच गुना है क्योंकि productive land total area का केवल one-fifth है। परीक्षा में denominator shrink होने पर density increase का inverse relation समझें। / Cultivated land is \(0.20A\). Therefore, density relative to cultivated land is \(250/0.20=1250\) persons per square kilometre of cultivated land. The third option is correct. This is five times the arithmetic density because productive land is only one-fifth of total area. In examinations, understand the inverse relationship between denominator size and density.
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