{"id":266179,"date":"2025-07-22T16:41:04","date_gmt":"2025-07-22T16:41:04","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=266179"},"modified":"2025-07-22T16:41:08","modified_gmt":"2025-07-22T16:41:08","slug":"what-is-the-energy-of-photons-emitted-by-the-led-at-a-frequency-of-610-thz","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/22\/what-is-the-energy-of-photons-emitted-by-the-led-at-a-frequency-of-610-thz\/","title":{"rendered":"What is the energy of photons emitted by the LED at a frequency of 610 THz"},"content":{"rendered":"\n<p>What is the energy of photons emitted by the LED at a frequency of 610 THz<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The energy EEE of a photon can be calculated using the formula: E=h\u00d7fE = h \\times fE=h\u00d7f<\/p>\n\n\n\n<p>Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>EEE is the energy of the photon.<\/li>\n\n\n\n<li>hhh is Planck&#8217;s constant, 6.626\u00d710\u221234\u2009J\u22c5s6.626 \\times 10^{-34} \\, \\text{J} \\cdot \\text{s}6.626\u00d710\u221234J\u22c5s.<\/li>\n\n\n\n<li>fff is the frequency of the photon.<\/li>\n<\/ul>\n\n\n\n<p>In this case, the frequency fff is given as 610 THz (terahertz), which is equivalent to 610\u00d71012\u2009Hz610 \\times 10^{12} \\, \\text{Hz}610\u00d71012Hz.<\/p>\n\n\n\n<p>Now, plugging the values into the equation: E=(6.626\u00d710\u221234\u2009J\u22c5s)\u00d7(610\u00d71012\u2009Hz)E = (6.626 \\times 10^{-34} \\, \\text{J} \\cdot \\text{s}) \\times (610 \\times 10^{12} \\, \\text{Hz})E=(6.626\u00d710\u221234J\u22c5s)\u00d7(610\u00d71012Hz) E=4.04\u00d710\u221219\u2009JE = 4.04 \\times 10^{-19} \\, \\text{J}E=4.04\u00d710\u221219J<\/p>\n\n\n\n<p>Thus, the energy of the photons emitted by the LED at a frequency of 610 THz is approximately 4.04\u00d710\u221219\u2009J4.04 \\times 10^{-19} \\, \\text{J}4.04\u00d710\u221219J.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>The energy of a photon is directly proportional to its frequency. This relationship is described by Planck&#8217;s equation, where E=h\u00d7fE = h \\times fE=h\u00d7f. The constant hhh, known as Planck&#8217;s constant, represents the fundamental scale of quantum mechanics, and it links the frequency of light to its energy.<\/p>\n\n\n\n<p>In this example, the LED emits light with a frequency of 610 THz, which corresponds to a visible color in the orange-red part of the electromagnetic spectrum. The higher the frequency, the greater the energy of the photons emitted. Conversely, lower-frequency light (such as red light) carries less energy per photon compared to higher-frequency light (like blue or ultraviolet light).<\/p>\n\n\n\n<p>This principle underlies the operation of LEDs and other light-emitting devices, where the color (and therefore energy) of the emitted light is determined by the frequency of the oscillating electrical current that excites the electrons in the material.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner6-1551.jpeg\" alt=\"\" class=\"wp-image-266180\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>What is the energy of photons emitted by the LED at a frequency of 610 THz The Correct Answer and Explanation is: The energy EEE of a photon can be calculated using the formula: E=h\u00d7fE = h \\times fE=h\u00d7f Where: In this case, the frequency fff is given as 610 THz (terahertz), which is equivalent [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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