Ocean waves are tansverse waves travelling in concentric circles of ever increasing radii. When they hit the shore, their radius of curvature is so large that they can be treated as plane waves. Hence they hit the shore nearly normal to the shore.
Ocean waves are tansverse waves travelling in concentric circles of ever increasing radii. When they hit the shore, their radius of curvature is so large that they can be treated as plane waves. Hence they hit the shore nearly normal to the shore.