The ray of light converges and passes through the principal focus on the other side of the convex lens.
What happens to a ray of light parallel to the principal axis after refraction through a convex lens?
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The ray of light converges and passes through the principal focus on the other side of the convex lens.
After refraction through a convex lens, a ray of light parallel to the principal axis converges to a focal point on the opposite side of the lens. The convex shape causes the lens to converge parallel rays towards its principal focus. This converging behavior is a result of the bending of light as it passes from a less dense medium (air) to a denser medium (lens). The convergence of parallel rays allows convex lenses to focus light, and the point where the rays meet is the real focal point. This property is essential in various optical applications, including image formation in cameras and magnifying glasses.
When a ray of light is parallel to the principal axis and passes through a convex lens, it converges after refraction. In other words, the ray of light bends towards the principal axis as it passes through the convex lens. Convex lenses are thicker in the center and thinner at the edges, causing light rays to converge. This converging behavior is a characteristic feature of convex lenses and is different from the diverging behavior exhibited by concave lenses. The point where the refracted rays converge is called the principal focus of the convex lens.