Explanation: Population density is a critical demographic measure that indicates the number of people living in a given area. It is calculated by dividing the total population of a region by its total area. In the context of Indian states, Arunachal Pradesh stands out as having the lowest population density.
Arunachal Pradesh is located in the northeastern part of India and is known for its vast, rugged, and mountainous terrain. The state covers an area of approximately 83,743 square kilometers, making it the largest state in the northeastern region. Despite its size, the population of Arunachal Pradesh is relatively small, with an estimated population of around 1.4 million people as of the latest census. This results in a population density of about 17 people per square kilometer, which is the lowest among all Indian states.
The low population density in Arunachal Pradesh can be attributed to several factors. The state's geography, with its numerous mountain ranges and dense forests, makes large parts of the region uninhabitable. Additionally, the state's infrastructure is not as developed as in other parts of India, which limits the ability of people to settle in certain areas. The state also has a significant number of tribal communities who have traditionally lived in small, scattered settlements.
In contrast, the other northeastern states mentioned in the options—Mizoram, Meghalaya, and Tripura—also have low population densities, but they are not as low as that of Arunachal Pradesh. Mizoram, for example, has a population density of around 42 people per square kilometer, while Meghalaya has a density of around 400 people per square kilometer. Tripura, with a population density of around 1,100 people per square kilometer, has a much higher density compared to Arunachal Pradesh.
Understanding the concept of population density is crucial for comprehending the demographic and geographical characteristics of different regions. It helps in planning and resource allocation, as well as in understanding the social and economic dynamics of a region. In the case of Arunachal Pradesh, the low population density has significant implications for governance, development, and environmental conservation efforts.