Why are convex lenses converging and concave lenses diverging?

The rays of light coming from a distant object when pass through a convex lens, they all converge at a point called the focus and thus converging lens.

When parallel rays of light pass through a concave lens, they diverge as shown in the figure and don't meet really at any point. We trace back the light and get a point on the same side as of incident rays where they meet called the focus and thus diverging lens.

June 06, 2022 Tags : JEE , Optics , Physics

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