A convex lens is thicker in the middle than at the edges, and causes light rays to ______.

Study for Refraction and Lenses Test. Use flashcards and multiple choice questions, with hints and explanations for each question. Take the road to success and prepare for your test today!

Multiple Choice

A convex lens is thicker in the middle than at the edges, and causes light rays to ______.

Explanation:
A convex lens acts as a converging lens because it is thicker in the middle than at the edges. When parallel light rays enter, each ray is refracted toward the lens’s axis at the first surface and then refracted again as it exits. The overall effect of these two refractions is to bend the rays inward so that they meet at a focal point. That’s why light rays converge after passing through a convex lens. Diverge would occur with a concave lens (thinner in the middle), while absorb or rotate aren’t typical behaviors described for how lenses handle light paths.

A convex lens acts as a converging lens because it is thicker in the middle than at the edges. When parallel light rays enter, each ray is refracted toward the lens’s axis at the first surface and then refracted again as it exits. The overall effect of these two refractions is to bend the rays inward so that they meet at a focal point. That’s why light rays converge after passing through a convex lens. Diverge would occur with a concave lens (thinner in the middle), while absorb or rotate aren’t typical behaviors described for how lenses handle light paths.

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