{"id":4210,"date":"2025-06-12T19:15:44","date_gmt":"2025-06-12T13:45:44","guid":{"rendered":"https:\/\/leverageedu.com\/questions-answers\/?p=4210"},"modified":"2025-06-12T19:15:47","modified_gmt":"2025-06-12T13:45:47","slug":"which-color-of-light-has-the-longest-wavelength","status":"publish","type":"post","link":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/","title":{"rendered":"Which color of light has the longest wavelength?"},"content":{"rendered":"\n<p><strong>Answer: <\/strong>The correct answer is D) Red. In the visible light spectrum, Red has the longest wavelength (about 620 &#8211; 750 nanometers), while Violet has the shortest (around 380 &#8211; 450 nanometers). The visible colors follow the order VIBGYOR: Violet, Indigo, Blue, Green, Yellow, Orange, Red from shortest to longest wavelength. Since frequency and wavelength are inversely related, red light has the lowest frequency and violet light has the highest. That\u2019s why Red light has the longest wavelength and is the correct answer.<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Complete Answer:<\/strong><\/p>\n\n\n\n<p>To find which color of light has the longest wavelength, we should understand the wavelength and frequency values of different visible colors. The visible spectrum for human eyes ranges from 380 to 750 nanometers (nm) in wavelength.<\/p>\n\n\n\n<p><strong>Wavelength Order (Shortest to Longest):<\/strong><\/p>\n\n\n\n<p>The correct color order based on wavelength is called <strong>VIBGYOR<\/strong>:<\/p>\n\n\n\n<p>Violet &lt; Indigo &lt; Blue &lt; Green &lt; Yellow &lt; Orange &lt; Red<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Violet<\/strong>: 380\u2013450 nm<\/li>\n\n\n\n<li><strong>Indigo<\/strong>: 450\u2013460 nm<\/li>\n\n\n\n<li><strong>Blue<\/strong>: 460\u2013495 nm<\/li>\n\n\n\n<li><strong>Green<\/strong>: 495\u2013570 nm<\/li>\n\n\n\n<li><strong>Yellow<\/strong>: 570\u2013590 nm<\/li>\n\n\n\n<li><strong>Orange<\/strong>: 590\u2013620 nm<\/li>\n\n\n\n<li><strong>Red<\/strong>: 620\u2013750 nm<\/li>\n<\/ul>\n\n\n\n<p>So, as you move from violet to red, the wavelength increases, and the frequency decreases (since they are inversely related).<\/p>\n\n\n\n<p>Now let\u2019s understand why other options are incorrect:<\/p>\n\n\n\n<p><strong>A) Violet \u2013 <\/strong>Violet has the shortest wavelength (~380\u2013450 nm) and highest frequency. It is at the beginning of the visible spectrum.<\/p>\n\n\n\n<p><strong>B) Green \u2013 <\/strong>Green lies in the middle of the spectrum (~495\u2013570 nm). Its wavelength is more than violet and blue but less than orange or red.<\/p>\n\n\n\n<p><strong>C) Blue \u2013 <\/strong>Blue (~460\u2013495 nm) has shorter wavelength than green and much shorter than red.<\/p>\n\n\n\n<p><strong>D) Red \u2013 <\/strong>Red light has the longest wavelength (~620\u2013750 nm) and lowest frequency. It travels the farthest and bends the least. That\u2019s why red is used in warning signals and traffic lights\u2014it is visible from far away.<\/p>\n\n\n\n<p><strong>Important points:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Wavelength is measured in nanometers (nm), and frequency in Hertz (Hz).<\/li>\n\n\n\n<li>One wave&#8217;s wavelength is the distance between two peaks or troughs.<\/li>\n\n\n\n<li>Light with higher frequency has shorter wavelength, and vice versa.<\/li>\n\n\n\n<li>Visible Light Spectrum is just one small part of the electromagnetic spectrum, which also includes UV rays, infrared, X-rays, etc.<\/li>\n<\/ul>\n\n\n\n<p>Thus, Red light has the longest wavelength among all visible colors, and that&#8217;s why D) Red is the correct choice.<\/p>\n\n\n\n<p class=\"has-text-align-center has-vivid-red-color has-text-color has-link-color has-medium-font-size wp-elements-325df6ef448bed512cf38e1eaaead551\"><strong>Common Physics Doubt:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/how-many-electrons-are-there-in-one-coulomb-of-charge\/\"><strong>How many Electrons are there in One Coulomb of Charge?<\/strong><\/a><\/td><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/filament-of-electric-bulb-is-made-of-tungsten-class-12-physics-cbse\/\"><strong>Why Filament of Electric Bulb is Made of Tungsten<\/strong><\/a><\/td><\/tr><tr><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/infrasound-can-be-heard-by\/\"><strong>Infrasound can be heard by<\/strong><\/a><\/td><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/principle-and-use-of-sonar-and-radar-class-10-physics-cbse\/\"><strong>Describe the Principle and Use of SONAR and RADAR<\/strong><\/a><\/td><\/tr><tr><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/distinguish-between-acceleration-and-retardation\/\"><strong>Distinguish between acceleration and retardation<\/strong><\/a><\/td><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/what-are-magnets-name-a-natural-magnet-class-12-physics-cbse\/\"><strong>What are Magnets? Name a Natural magnet.<\/strong><\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"Answer: The correct answer is D) Red. In the visible light spectrum, Red has the longest wavelength (about&hellip;\n","protected":false},"author":115,"featured_media":4214,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"editor_notices":[],"footnotes":""},"categories":[7,4],"tags":[],"class_list":{"0":"post-4210","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-physics","8":"category-science"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Which color of light has the longest wavelength?<\/title>\n<meta name=\"description\" content=\"Which color of light has the longest wavelength? A. Violet,, B. Green, C. Blue, D. Red. 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A. Violet,, B. Green, C. Blue, D. Red. The correct answer is option D. Red.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/","og_locale":"en_US","og_type":"article","og_title":"Which color of light has the longest wavelength?","og_description":"Which color of light has the longest wavelength? A. Violet,, B. Green, C. Blue, D. Red. The correct answer is option D. Red.","og_url":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/","og_site_name":"Questions &amp; Answers","article_published_time":"2025-06-12T13:45:44+00:00","article_modified_time":"2025-06-12T13:45:47+00:00","og_image":[{"width":1024,"height":640,"url":"https:\/\/blogassets.leverageedu.com\/media\/uploads\/sites\/5\/2025\/06\/12185929\/Which-color-of-light-has-the-longest-wavelength.webp","type":"image\/webp"}],"author":"Mohit Rajak","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Mohit Rajak","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/#article","isPartOf":{"@id":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/"},"author":{"name":"Mohit Rajak","@id":"https:\/\/leverageedu.com\/questions-answers\/#\/schema\/person\/397ac1e3cf645bddda6f314b3308005b"},"headline":"Which color of light has the longest wavelength?","datePublished":"2025-06-12T13:45:44+00:00","dateModified":"2025-06-12T13:45:47+00:00","mainEntityOfPage":{"@id":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/"},"wordCount":417,"commentCount":0,"image":{"@id":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/#primaryimage"},"thumbnailUrl":"https:\/\/blogassets.leverageedu.com\/media\/uploads\/sites\/5\/2025\/06\/12185929\/Which-color-of-light-has-the-longest-wavelength.webp","articleSection":["Physics","Science"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/","url":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/","name":"Which color of light has the longest wavelength?","isPartOf":{"@id":"https:\/\/leverageedu.com\/questions-answers\/#website"},"primaryImageOfPage":{"@id":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/#primaryimage"},"image":{"@id":"https:\/\/leverageedu.com\/questions-answers\/which-color-of-light-has-the-longest-wavelength\/#primaryimage"},"thumbnailUrl":"https:\/\/blogassets.leverageedu.com\/media\/uploads\/sites\/5\/2025\/06\/12185929\/Which-color-of-light-has-the-longest-wavelength.webp","datePublished":"2025-06-12T13:45:44+00:00","dateModified":"2025-06-12T13:45:47+00:00","author":{"@id":"https:\/\/leverageedu.com\/questions-answers\/#\/schema\/person\/397ac1e3cf645bddda6f314b3308005b"},"description":"Which color of light has the longest wavelength? A. Violet,, B. Green, C. Blue, D. Red. The correct answer is option D. 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