Simple Explanation
नई population \(320000 - 80000 = 240000\) है। Area 1600 square kilometres unchanged है। इसलिए new density \(240000/1600 = 150\) persons per square kilometre होगी। दूसरा विकल्प सही है। Original density 200 थी, इसलिए out-migration के बाद density कम होना logically भी consistent है। परीक्षा में migration questions में पहले updated population निकालें। / The new population is \(320000 - 80000 = 240000\). The area remains 1600 square kilometres. Therefore, the new density is \(240000/1600 = 150\) persons per square kilometre. The second option is correct. The original density was 200, so the decline after out-migration is also logically consistent. In examinations, update the population first in migration-based density questions.
