{"id":133727,"date":"2022-03-03T23:40:15","date_gmt":"2022-03-03T18:10:15","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=133727"},"modified":"2025-06-18T16:22:25","modified_gmt":"2025-06-18T10:52:25","slug":"magnification-and-power-of-a-lens","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/class-10\/physics\/light\/magnification-and-power-of-a-lens\/","title":{"rendered":"Magnification and Power of a Lens"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/physics\/light\/magnification-and-power-of-a-lens\/#What_is_the_Magnification_of_a_lens\" title=\"What is the Magnification of a lens?\">What is the Magnification of a lens?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/physics\/light\/magnification-and-power-of-a-lens\/#What_is_the_Power_of_a_lens\" title=\"What is the Power of a lens?\">What is the Power of a lens?<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Table of Contents<\/strong><\/p>\n<ul>\n<li>Magnification of a Lens<\/li>\n<li>Power of a Lens<\/li>\n<li>Example<\/li>\n<li>Summary<\/li>\n<li>What\u2019s Next?<\/li>\n<\/ul>\n<p>In the previous segment, we looked at some <strong>Examples based on the lens equation<\/strong>. In this segment, let us learn about the magnification and power of a lens.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_the_Magnification_of_a_lens\"><\/span>What is the Magnification of a lens?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>The magnification of a lens compares the size of the image to the size of the object.<\/li>\n<li>Magnification produced by a lens is defined as the ratio of the size of the image to the size of the object. It is denoted by \u2018m\u2019.<\/li>\n<li>Thus, if the heights of the object and the image are \u210e?<\/li>\n<\/ul>\n<p>??? \u210e?<\/p>\n<p>respectively, then ? = \u210e? .<\/p>\n<p>\u210e?<\/p>\n<ul>\n<li>If m&gt;1, then \u210e? &gt; \u210e?. That is, the image formed is an enlarged image.<\/li>\n<li>If m&lt;1, then \u210e? &lt; \u210e?. That is, the image formed is a diminished image.<\/li>\n<li>For a concave lens, the image formed is always diminished. Thus, for a concave lens, m&lt;1.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_is_the_Power_of_a_lens\"><\/span>What is the Power of a lens?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Consider two convex lenses such that one is thicker than the other. The focal length of the thicker convex mirror will be smaller than that of the thinner convex mirror. In the case of a thicker convex lens, the light bends more than that in the case of a thinner convex lens. That is, there is more deviation of light in the thicker convex lens than the thinner convex lens.<\/li>\n<li>Similarly consider two concave lenses such that one is thicker than the other. The focal length of the thicker concave mirror will be smaller than that of the thinner concave mirror. In the case of a thicker concave lens, the light bends more than that in the case of a thinner concave lens. That is, there is more deviation of light in the thicker concave lens than the thinner concave lens.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents Magnification of a Lens Power of a Lens Example Summary What\u2019s Next? In the previous segment, we [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Magnification and Power of a Lens","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"Magnification and Power of a Lens | Class 10 Physics Light","custom_permalink":"class-10\/physics\/light\/magnification-and-power-of-a-lens\/"},"categories":[1],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Magnification and Power of a Lens - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"Magnification and Power of a Lens | Class 10 Physics Light\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/physics\/light\/magnification-and-power-of-a-lens\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Magnification and Power of a Lens - 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