Question

how does light enter a convex lens? light diverges. light curves. light travels in a straight line.

Explanation:

Light travels in a straight line until it interacts with a medium like a convex lens. When light enters a convex lens, it bends (refracts) due to the change in medium (from air to lens material). But the initial entry is based on the property that light travels in straight - line paths in a uniform medium (air before entering the lens).

Answer:

Light travels in a straight line.