Simple Explanation
Population density population और area के ratio पर निर्भर करती है। कम population यदि बहुत बड़े area में फैली हो तो persons per unit area कम होंगे, इसलिए density low होगी। इस कारण चौथा विकल्प सही है। बड़ी population और छोटा area सामान्यतः high density produce करता है। परीक्षा में low population plus large area को low density का सरल उदाहरण समझें। / Population density depends on the ratio between population and area. When a small population is spread over a very large area, the number of persons per unit area is low, so density is low. Therefore, the fourth option is correct. A large population within a small area generally creates high density. In examinations, remember small population plus large area as a simple pattern of low density.
