Explanations:The longitudinal difference between two places on Earth is the angular distance between their longitudes. Longitude is a coordinate that specifies the east-west position of a point on the Earth's surface. It is measured in degrees, with the prime meridian (0° longitude) passing through the Royal Observatory in Greenwich, England, as the reference point. Longitudes range from 0° to 180° east and 0° to 180° west.
In the context of India, Gujarat and Arunachal Pradesh are located on opposite sides of the country. Gujarat is situated on the western coast of India, while Arunachal Pradesh is located in the northeastern part of the country. The longitudinal coordinates of these states are crucial for determining the longitudinal difference between them.
Gujarat's longitude is approximately 70° to 74° east, while Arunachal Pradesh's longitude is approximately 92° to 97° east. To find the longitudinal difference, we subtract the westernmost longitude of Gujarat from the easternmost longitude of Arunachal Pradesh. This calculation yields a difference of approximately 30 degrees.
It is important to note that the longitudinal difference is not the same as the latitudinal difference, which measures the north-south position. The latitudinal difference between these states would be different and is not relevant to this question.
Understanding the longitudinal difference between different regions is essential for various applications, including navigation, time zone calculations, and geographical studies. In competitive examinations, such as the UPSC, SSC, and Bank PO, questions related to geographical coordinates and differences are common, testing the candidate's knowledge of Indian geography and their ability to perform basic calculations.