{"id":88577,"date":"2025-06-01T07:15:10","date_gmt":"2025-06-01T07:15:10","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88577"},"modified":"2025-06-01T07:15:10","modified_gmt":"2025-06-01T07:15:10","slug":"which-of-the-following-are-the-characteristics-of-electromagnetic-wave","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/","title":{"rendered":"Which of the following are the characteristics of electromagnetic wave"},"content":{"rendered":"<p>Which of the following are the characteristics of electromagnetic waves ?<\/p>\n<ul>\n<li>They are elastic waves.<\/li>\n<li>They can also move in vacuum.<\/li>\n<li>They have electric and magnetic components which are mutually perpendicular.<\/li>\n<li>They move with a speed equal to 3 lakh meters per second.<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below :<\/p>\n<p>[amp_mcq option1=&#8221;1, 2, 3 and 4&#8243; option2=&#8221;1, 2 and 4 only&#8221; option3=&#8221;2 and 3 only&#8221; option4=&#8221;3 and 4 only&#8221; correct=&#8221;option3&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC NDA-2 &#8211; 2019<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-nda-2-2019.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-nda-2-2019\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nStatement 1 is incorrect because electromagnetic waves are not elastic waves; they do not require a medium for propagation. Statement 4 is incorrect as electromagnetic waves move with a speed of approximately 3 x 10^8 meters per second (speed of light), which is 3 lakh *kilometres* per second, not 3 lakh meters per second. Statements 2 and 3 correctly describe characteristics of electromagnetic waves: they can travel through a vacuum, and their electric and magnetic field components are mutually perpendicular.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nElectromagnetic waves are transverse waves consisting of oscillating electric and magnetic fields that propagate through space at the speed of light, even in a vacuum. They do not require a material medium, unlike mechanical waves (like sound or elastic waves). The electric and magnetic fields are perpendicular to each other and to the direction of wave propagation.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nThe speed of electromagnetic waves in a vacuum is a fundamental constant, denoted by &#8216;c&#8217;, approximately 299,792,458 meters per second, often rounded to 3 x 10^8 m\/s or 300,000 km\/s (3 lakh km\/s). The spectrum of electromagnetic waves includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays, all differing in wavelength and frequency but sharing these fundamental characteristics.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following are the characteristics of electromagnetic waves ? They are elastic waves. They can also move in vacuum. They have electric and magnetic components which are mutually perpendicular. They move with a speed equal to 3 lakh meters per second. Select the correct answer using the code given below : [amp_mcq option1=&#8221;1, &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following are the characteristics of electromagnetic wave\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/#more-88577\">Detailed Solution<span class=\"screen-reader-text\">Which of the following are the characteristics of electromagnetic wave<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1094],"tags":[1119,1128,1274],"class_list":["post-88577","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1119","tag-physics","tag-wave-motion","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Which of the following are the characteristics of electromagnetic wave<\/title>\n<meta name=\"description\" content=\"Statement 1 is incorrect because electromagnetic waves are not elastic waves; they do not require a medium for propagation. Statement 4 is incorrect as electromagnetic waves move with a speed of approximately 3 x 10^8 meters per second (speed of light), which is 3 lakh *kilometres* per second, not 3 lakh meters per second. Statements 2 and 3 correctly describe characteristics of electromagnetic waves: they can travel through a vacuum, and their electric and magnetic field components are mutually perpendicular. Electromagnetic waves are transverse waves consisting of oscillating electric and magnetic fields that propagate through space at the speed of light, even in a vacuum. They do not require a material medium, unlike mechanical waves (like sound or elastic waves). The electric and magnetic fields are perpendicular to each other and to the direction of wave propagation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following are the characteristics of electromagnetic wave\" \/>\n<meta property=\"og:description\" content=\"Statement 1 is incorrect because electromagnetic waves are not elastic waves; they do not require a medium for propagation. Statement 4 is incorrect as electromagnetic waves move with a speed of approximately 3 x 10^8 meters per second (speed of light), which is 3 lakh *kilometres* per second, not 3 lakh meters per second. Statements 2 and 3 correctly describe characteristics of electromagnetic waves: they can travel through a vacuum, and their electric and magnetic field components are mutually perpendicular. Electromagnetic waves are transverse waves consisting of oscillating electric and magnetic fields that propagate through space at the speed of light, even in a vacuum. They do not require a material medium, unlike mechanical waves (like sound or elastic waves). The electric and magnetic fields are perpendicular to each other and to the direction of wave propagation.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:15:10+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which of the following are the characteristics of electromagnetic wave","description":"Statement 1 is incorrect because electromagnetic waves are not elastic waves; they do not require a medium for propagation. Statement 4 is incorrect as electromagnetic waves move with a speed of approximately 3 x 10^8 meters per second (speed of light), which is 3 lakh *kilometres* per second, not 3 lakh meters per second. Statements 2 and 3 correctly describe characteristics of electromagnetic waves: they can travel through a vacuum, and their electric and magnetic field components are mutually perpendicular. Electromagnetic waves are transverse waves consisting of oscillating electric and magnetic fields that propagate through space at the speed of light, even in a vacuum. They do not require a material medium, unlike mechanical waves (like sound or elastic waves). The electric and magnetic fields are perpendicular to each other and to the direction of wave propagation.","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:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following are the characteristics of electromagnetic wave","og_description":"Statement 1 is incorrect because electromagnetic waves are not elastic waves; they do not require a medium for propagation. Statement 4 is incorrect as electromagnetic waves move with a speed of approximately 3 x 10^8 meters per second (speed of light), which is 3 lakh *kilometres* per second, not 3 lakh meters per second. Statements 2 and 3 correctly describe characteristics of electromagnetic waves: they can travel through a vacuum, and their electric and magnetic field components are mutually perpendicular. Electromagnetic waves are transverse waves consisting of oscillating electric and magnetic fields that propagate through space at the speed of light, even in a vacuum. They do not require a material medium, unlike mechanical waves (like sound or elastic waves). The electric and magnetic fields are perpendicular to each other and to the direction of wave propagation.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:15:10+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/","name":"Which of the following are the characteristics of electromagnetic wave","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:15:10+00:00","dateModified":"2025-06-01T07:15:10+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statement 1 is incorrect because electromagnetic waves are not elastic waves; they do not require a medium for propagation. Statement 4 is incorrect as electromagnetic waves move with a speed of approximately 3 x 10^8 meters per second (speed of light), which is 3 lakh *kilometres* per second, not 3 lakh meters per second. Statements 2 and 3 correctly describe characteristics of electromagnetic waves: they can travel through a vacuum, and their electric and magnetic field components are mutually perpendicular. Electromagnetic waves are transverse waves consisting of oscillating electric and magnetic fields that propagate through space at the speed of light, even in a vacuum. They do not require a material medium, unlike mechanical waves (like sound or elastic waves). The electric and magnetic fields are perpendicular to each other and to the direction of wave propagation.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-are-the-characteristics-of-electromagnetic-wave\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-2","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-2\/"},{"@type":"ListItem","position":3,"name":"Which of the following are the characteristics of electromagnetic wave"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=88577"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88577\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=88577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=88577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=88577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}