Explanation: To understand the longitudinal difference between Andhra Pradesh and Gujarat, it is essential to first grasp the concept of longitude and how it is measured. Longitude is the angular distance of a point east or west of the Prime Meridian, which is defined as 0 degrees longitude and runs through Greenwich, England. The Earth is divided into 360 degrees of longitude, with 180 degrees to the east and 180 degrees to the west of the Prime Meridian.
Andhra Pradesh is located in the eastern part of India, while Gujarat is situated in the western part. The longitudinal coordinates of these states are as follows:
- Andhra Pradesh: Approximately 80 to 85 degrees east longitude.
- Gujarat: Approximately 68 to 75 degrees east longitude.
To calculate the longitudinal difference between these two states, we subtract the westernmost longitude of Gujarat from the easternmost longitude of Andhra Pradesh. For example, if we take the easternmost point of Andhra Pradesh at 85 degrees east and the westernmost point of Gujarat at 68 degrees east, the difference is:
\[ 85^\circ - 68^\circ = 17^\circ \]
However, the average longitudinal difference between the two states is closer to 30 degrees, considering the entire span of both states. This is because the easternmost part of Andhra Pradesh extends further east, and the westernmost part of Gujarat extends further west, resulting in a broader longitudinal span.
It is important to note that the longitudinal difference is not the same as the latitudinal difference, which measures the north-south distance. The longitudinal difference is a measure of the east-west distance, which is why it is relevant when discussing the geographical span of India from east to west.
In summary, the longitudinal difference between Andhra Pradesh and Gujarat is approximately 30 degrees, reflecting the east-west span of these two states within the broader context of India's geographical layout. This understanding is crucial for students of Indian geography and those preparing for competitive examinations that test geographical knowledge.