{"id":133633,"date":"2022-03-03T23:40:21","date_gmt":"2022-03-03T18:10:21","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=133633"},"modified":"2024-10-15T15:42:36","modified_gmt":"2024-10-15T10:12:36","slug":"hecw-formation-of-a-rainbow","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/class-10\/physics\/eye\/hecw-formation-of-a-rainbow\/","title":{"rendered":"HECW \u2013 Formation of a rainbow"},"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\/eye\/hecw-formation-of-a-rainbow\/#How_is_a_rainbow_formed\" title=\"How is a rainbow formed?\">How is a rainbow formed?<\/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\/eye\/hecw-formation-of-a-rainbow\/#Refraction_of_light\" title=\"Refraction of light\">Refraction of light<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/physics\/eye\/hecw-formation-of-a-rainbow\/#Critical_angle\" title=\"Critical angle\">Critical angle<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/physics\/eye\/hecw-formation-of-a-rainbow\/#Total_internal_reflection\" title=\"Total internal reflection\">Total internal reflection<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Table of Contents<\/strong><\/p>\n<ul>\n<li>Formation of a Rainbow<\/li>\n<li>Summary<\/li>\n<li>Did You Know?<\/li>\n<li>What\u2019s Next?<\/li>\n<\/ul>\n<p>In the previous segment, we learnt about the <strong>Dispersion of light. <\/strong>In this segment, we will learn how rainbows are formed.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_is_a_rainbow_formed\"><\/span>How is a rainbow formed?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>White light and tiny water droplets are required for the formation of a rainbow. It is formed due to refraction and total internal reflection.<\/li>\n<li>In the rainy season, many water droplets are present in the atmosphere and hence we mostly see the rainbow in the rainy season.<\/li>\n<li>When the light travels from an optically denser to an optically rarer medium, it bends away from the normal. This phenomenon is called the refraction of light.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-133631 size-full\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500022.jpg\" alt=\"\" width=\"493\" height=\"280\" srcset=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500022.jpg?v=1646330501 493w, https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500022-300x170.jpg?v=1646330501 300w\" sizes=\"(max-width: 493px) 100vw, 493px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Refraction_of_light\"><\/span>Refraction of light<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>The greater the angle of incidence, the greater will be the angle of refraction.<\/li>\n<li>But for an angle called the critical angle, the refracted ray will be perpendicular to the normal line.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-133630 size-full\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500025.jpg\" alt=\"\" width=\"645\" height=\"323\" srcset=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500025.jpg?v=1646330501 645w, https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500025-300x150.jpg?v=1646330501 300w\" sizes=\"(max-width: 645px) 100vw, 645px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Critical_angle\"><\/span>Critical angle<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>If the angle of incidence is increased further, then the refracted ray will now travel through the incident medium. This phenomenon is called total internal reflection.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-133632 size-full\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500026.jpg\" alt=\"\" width=\"668\" height=\"282\" srcset=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500026.jpg?v=1646330501 668w, https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330500026-300x127.jpg?v=1646330501 300w\" sizes=\"(max-width: 668px) 100vw, 668px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Total_internal_reflection\"><\/span>Total internal reflection<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>The white light of the sun is composed of seven primary colours. A water droplet disperses the white sunlight at the entry point.<\/li>\n<li>This dispersed light falls on the rear side of the droplet due to total internal reflection, as the angle of incidence at the second incidence for each coloured light is more than the critical angle.<\/li>\n<li>So these different coloured rays are now at the air-water interface again for the third time, but this time, however, the total internal reflection does not occur and they bend in air.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents Formation of a Rainbow Summary Did You Know? What\u2019s Next? In the previous segment, we learnt about [&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":"HECW \u2013 Formation of a rainbow","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"HECW \u2013 Formation of a rainbow | Class 10 Physics Eye","custom_permalink":"class-10\/physics\/eye\/hecw-formation-of-a-rainbow\/"},"categories":[4],"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>HECW \u2013 Formation of a rainbow - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"HECW \u2013 Formation of a rainbow | Class 10 Physics Eye\" \/>\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\/eye\/hecw-formation-of-a-rainbow\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HECW \u2013 Formation of a rainbow - 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