{"id":87600,"date":"2025-06-01T06:48:32","date_gmt":"2025-06-01T06:48:32","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87600"},"modified":"2025-06-01T06:48:32","modified_gmt":"2025-06-01T06:48:32","slug":"which-of-the-following-statements-about-electromagnetic-waves-sound-w","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-electromagnetic-waves-sound-w\/","title":{"rendered":"Which of the following statements about electromagnetic waves, sound w"},"content":{"rendered":"<p>Which of the following statements about electromagnetic waves, sound waves and water waves is\/are correct ?<\/p>\n<ul>\n<li>1. They exhibit reflection<\/li>\n<li>2. They carry energy<\/li>\n<li>3. They exert pressure<\/li>\n<li>4. They can travel in vacuum<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below :<\/p>\n<p>[amp_mcq option1=&#8221;1, 2 and 3&#8243; option2=&#8221;2 and 4&#8243; option3=&#8221;1 and 3 only&#8221; option4=&#8221;1 only&#8221; correct=&#8221;option1&#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-1 &#8211; 2018<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-nda-1-2018.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-nda-1-2018\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nThe correct answer is A.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nLet&#8217;s examine each statement for electromagnetic waves, sound waves, and water waves:<br \/>\n1.  They exhibit reflection: Yes, all three types of waves can be reflected when they encounter a boundary. (e.g., light reflection from a mirror, sound reflection creating an echo, water waves reflecting off a wall). Correct.<br \/>\n2.  They carry energy: Yes, all waves are disturbances that transfer energy from one place to another. Correct.<br \/>\n3.  They exert pressure: Electromagnetic waves exert radiation pressure. Sound waves are essentially pressure variations in a medium. Water waves exert pressure on objects they encounter. Correct.<br \/>\n4.  They can travel in vacuum: Electromagnetic waves (like light, radio waves) can travel through a vacuum. However, sound waves require a material medium (like air, water, or solids) to propagate and cannot travel in a vacuum. Water waves also require water as a medium. Incorrect.<\/p>\n<p>Therefore, statements 1, 2, and 3 are correct for all three types of waves, while statement 4 is only correct for electromagnetic waves.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nElectromagnetic waves are transverse waves. Sound waves are longitudinal waves (in fluids) or can be both longitudinal and transverse (in solids). Water waves are complex, often a combination of transverse and longitudinal motions, particularly surface waves. The ability to travel in vacuum is a key distinction between electromagnetic waves and mechanical waves (like sound and water waves), which require a medium.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following statements about electromagnetic waves, sound waves and water waves is\/are correct ? 1. They exhibit reflection 2. They carry energy 3. They exert pressure 4. They can travel in vacuum Select the correct answer using the code given below : [amp_mcq option1=&#8221;1, 2 and 3&#8243; option2=&#8221;2 and 4&#8243; option3=&#8221;1 and 3 &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following statements about electromagnetic waves, sound w\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-electromagnetic-waves-sound-w\/#more-87600\">Detailed Solution<span class=\"screen-reader-text\">Which of the following statements about electromagnetic waves, sound w<\/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":[1093],"tags":[1114,1128,1274],"class_list":["post-87600","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1114","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 statements about electromagnetic waves, sound w<\/title>\n<meta name=\"description\" content=\"The correct answer is A. Let&#039;s examine each statement for electromagnetic waves, sound waves, and water waves: 1. They exhibit reflection: Yes, all three types of waves can be reflected when they encounter a boundary. (e.g., light reflection from a mirror, sound reflection creating an echo, water waves reflecting off a wall). Correct. 2. They carry energy: Yes, all waves are disturbances that transfer energy from one place to another. Correct. 3. They exert pressure: Electromagnetic waves exert radiation pressure. Sound waves are essentially pressure variations in a medium. Water waves exert pressure on objects they encounter. Correct. 4. They can travel in vacuum: Electromagnetic waves (like light, radio waves) can travel through a vacuum. However, sound waves require a material medium (like air, water, or solids) to propagate and cannot travel in a vacuum. Water waves also require water as a medium. Incorrect. Therefore, statements 1, 2, and 3 are correct for all three types of waves, while statement 4 is only correct for electromagnetic waves.\" \/>\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-statements-about-electromagnetic-waves-sound-w\/\" \/>\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 statements about electromagnetic waves, sound w\" \/>\n<meta property=\"og:description\" content=\"The correct answer is A. Let&#039;s examine each statement for electromagnetic waves, sound waves, and water waves: 1. They exhibit reflection: Yes, all three types of waves can be reflected when they encounter a boundary. (e.g., light reflection from a mirror, sound reflection creating an echo, water waves reflecting off a wall). Correct. 2. They carry energy: Yes, all waves are disturbances that transfer energy from one place to another. Correct. 3. They exert pressure: Electromagnetic waves exert radiation pressure. Sound waves are essentially pressure variations in a medium. Water waves exert pressure on objects they encounter. Correct. 4. They can travel in vacuum: Electromagnetic waves (like light, radio waves) can travel through a vacuum. However, sound waves require a material medium (like air, water, or solids) to propagate and cannot travel in a vacuum. Water waves also require water as a medium. Incorrect. Therefore, statements 1, 2, and 3 are correct for all three types of waves, while statement 4 is only correct for electromagnetic waves.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-electromagnetic-waves-sound-w\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:48:32+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 statements about electromagnetic waves, sound w","description":"The correct answer is A. Let's examine each statement for electromagnetic waves, sound waves, and water waves: 1. They exhibit reflection: Yes, all three types of waves can be reflected when they encounter a boundary. (e.g., light reflection from a mirror, sound reflection creating an echo, water waves reflecting off a wall). Correct. 2. They carry energy: Yes, all waves are disturbances that transfer energy from one place to another. Correct. 3. They exert pressure: Electromagnetic waves exert radiation pressure. Sound waves are essentially pressure variations in a medium. Water waves exert pressure on objects they encounter. Correct. 4. They can travel in vacuum: Electromagnetic waves (like light, radio waves) can travel through a vacuum. However, sound waves require a material medium (like air, water, or solids) to propagate and cannot travel in a vacuum. Water waves also require water as a medium. Incorrect. Therefore, statements 1, 2, and 3 are correct for all three types of waves, while statement 4 is only correct for electromagnetic waves.","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-statements-about-electromagnetic-waves-sound-w\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following statements about electromagnetic waves, sound w","og_description":"The correct answer is A. Let's examine each statement for electromagnetic waves, sound waves, and water waves: 1. They exhibit reflection: Yes, all three types of waves can be reflected when they encounter a boundary. (e.g., light reflection from a mirror, sound reflection creating an echo, water waves reflecting off a wall). Correct. 2. They carry energy: Yes, all waves are disturbances that transfer energy from one place to another. Correct. 3. They exert pressure: Electromagnetic waves exert radiation pressure. Sound waves are essentially pressure variations in a medium. Water waves exert pressure on objects they encounter. Correct. 4. They can travel in vacuum: Electromagnetic waves (like light, radio waves) can travel through a vacuum. However, sound waves require a material medium (like air, water, or solids) to propagate and cannot travel in a vacuum. Water waves also require water as a medium. Incorrect. Therefore, statements 1, 2, and 3 are correct for all three types of waves, while statement 4 is only correct for electromagnetic waves.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-electromagnetic-waves-sound-w\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T06:48:32+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-statements-about-electromagnetic-waves-sound-w\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-electromagnetic-waves-sound-w\/","name":"Which of the following statements about electromagnetic waves, sound w","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T06:48:32+00:00","dateModified":"2025-06-01T06:48:32+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct answer is A. Let's examine each statement for electromagnetic waves, sound waves, and water waves: 1. They exhibit reflection: Yes, all three types of waves can be reflected when they encounter a boundary. (e.g., light reflection from a mirror, sound reflection creating an echo, water waves reflecting off a wall). Correct. 2. They carry energy: Yes, all waves are disturbances that transfer energy from one place to another. Correct. 3. They exert pressure: Electromagnetic waves exert radiation pressure. Sound waves are essentially pressure variations in a medium. Water waves exert pressure on objects they encounter. Correct. 4. They can travel in vacuum: Electromagnetic waves (like light, radio waves) can travel through a vacuum. However, sound waves require a material medium (like air, water, or solids) to propagate and cannot travel in a vacuum. Water waves also require water as a medium. Incorrect. Therefore, statements 1, 2, and 3 are correct for all three types of waves, while statement 4 is only correct for electromagnetic waves.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-electromagnetic-waves-sound-w\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-electromagnetic-waves-sound-w\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-electromagnetic-waves-sound-w\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-1\/"},{"@type":"ListItem","position":3,"name":"Which of the following statements about electromagnetic waves, sound w"}]},{"@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\/87600","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=87600"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/87600\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=87600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=87600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=87600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}