{"id":133726,"date":"2022-03-03T23:40:15","date_gmt":"2022-03-03T18:10:15","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=133726"},"modified":"2025-06-18T16:21:59","modified_gmt":"2025-06-18T10:51:59","slug":"lens-equations-examples-part-2","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/class-10\/physics\/light\/lens-equations-examples-(part-2)\/","title":{"rendered":"Lens Equations &#8211; Examples (Part 2)"},"content":{"rendered":"<p><strong>Table of Contents<\/strong><\/p>\n<ul>\n<li>Example 1<\/li>\n<li>Example 2<\/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><strong>. <\/strong>In this segment, let us look at some more examples of the lens equation.<\/p>\n<h2>Example 1<\/h2>\n<p><strong>Q. A concave lens has a focal length of 18 cm. At what distance from the lens should the object be placed so that it forms an image at 9 cm from the lens?<\/strong><\/p>\n<p><strong>Solution:<\/strong><\/p>\n<p><strong>Given:<\/strong><\/p>\n<p>Distance of the image from the lens (v) = -9 cm Focal length of the concave lens (f) = -18 cm <strong>To find:<\/strong><\/p>\n<p>Distance of the object from the lens (u)<\/p>\n<p><strong>Formula:<\/strong><\/p>\n<p>1 1 1<\/p>\n<p>= \u2212<\/p>\n<p>? ? ?<\/p>\n<p><strong>Solution:<\/strong><\/p>\n<p>1 1 1<\/p>\n<p>= \u2212<\/p>\n<p>? ? ?<\/p>\n<p>1<\/p>\n<p>\u2234 =<\/p>\n<p>\u221218<\/p>\n<p>1 1<\/p>\n<p>\u2212<\/p>\n<p>\u22129 ?<\/p>\n<p>1 1 1<\/p>\n<p>\u2234 = +<\/p>\n<p>? \u22129 18<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents Example 1 Example 2 What\u2019s Next? In the previous segment, we looked at some Examples based on [&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":"Lens Equations - Examples (Part 2)","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"Lens Equations - Examples (Part 2) | Class 10 Physics Light","custom_permalink":"class-10\/physics\/light\/lens-equations-examples-(part-2)\/"},"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>Lens Equations - Examples (Part 2) - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"Lens Equations - Examples (Part 2) | 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\/lens-equations-examples-(part-2)\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lens Equations - 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