GENERAL KNOWLEDGE

Detailed explanation-1: -The prime meridian is the line of 0° longitude, the starting point for measuring distance both east and west around Earth. The prime meridian is arbitrary, meaning it could be chosen to be anywhere. Any line of longitude (a meridian) can serve as the 0° longitude line.

Detailed explanation-2: -At the Royal Observatory in Greenwich, England, a brass strip marks zero degrees longitude. The Western Hemisphere is on one side, the Eastern Hemisphere is on the other. Longitude is the measurement east or west of the prime meridian.

Detailed explanation-3: -Null Island is the point on Earth’s surface at zero degrees latitude and zero degrees longitude ( 0°N 0°E), i.e., where the prime meridian and the equator intersect. Null Island is located in international waters in the Atlantic Ocean, roughly 600 km off the coast of West Africa, in the Gulf of Guinea.