उत्तल लेंस क्या है इसके उपयोग और प्रकार || types of utttal lens in hindi and english

what is a Convex lens || types of uttal lens in hindi and English

  What is a convex lens called: – Convex lens is flat from the edges and thick or embossed in the middle. A Convex lens collects the rays of light and collects them at one point, so that you can burn anything. The uttal lens in English The Convex lens is called “convex lens” in […]

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