The curvature radius of a planar convex lens varies depending on the specific specifications and design of the lens, and there is no fixed value. Generally speaking, the curvature radius of the flat convex lens used in experiments is relatively large, usually around 800mm or larger. However, there are also some flat convex lenses that may have smaller curvature radii. The curvature radius of a planar convex lens can be measured through some experimental methods, such as using Newton's rings. In this method, the curvature radius is calculated by measuring the diameter D of the m-th ring and the diameter D 'of the m+nth ring, and then using the formula R=(D' - D)/(4n λ). This method can be performed in the laboratory to obtain the actual curvature radius value of the lens.
The above is an answer to the approximate curvature radius of a planar convex lens. We hope it will be helpful to you. If you have any questions, please feel free to consult or leave a message online.
