{"id":3453,"date":"2025-07-21T17:17:34","date_gmt":"2025-07-21T17:17:34","guid":{"rendered":"https:\/\/odeacademy.in\/?p=3453"},"modified":"2025-07-22T03:41:41","modified_gmt":"2025-07-22T03:41:41","slug":"waves-and-sound","status":"publish","type":"post","link":"https:\/\/thequickknowledge.com\/exam\/waves-and-sound\/","title":{"rendered":"Waves and Sound- Physics | General Science"},"content":{"rendered":"<h4 style=\"text-align: center;\"><b>Waves and Sound<\/b><\/h4>\n<div class=\"CM8kHf j86kh\" data-hveid=\"CAkQAQ\">\n<div data-expression=\"frac{1}{v} + frac{1}{u} = frac{1}{f}\">\n<hr \/>\n<p><strong data-start=\"244\" data-end=\"253\">Sound<\/strong> as a form of energy, requires a <strong data-start=\"371\" data-end=\"381\">medium<\/strong> (solid, liquid, or gas) doesn\u2019t travel in vacuum.\u00a0transferring the disturbance through the medium in the form of a <strong data-start=\"590\" data-end=\"598\">wave<\/strong>.<\/p>\n<p data-start=\"601\" data-end=\"630\"><strong>There are two types of waves:<\/strong><\/p>\n<ul data-start=\"631\" data-end=\"821\">\n<li><strong data-start=\"633\" data-end=\"655\">Longitudinal waves<\/strong>: Particles oscillate parallel to wave direction (e.g., sound waves). Sound waves are mechanical longitudinal waves.\u00a0Sound travels faster in solids, slower in gases.<\/li>\n<li><strong data-start=\"727\" data-end=\"747\">Transverse waves<\/strong>: Particles oscillate perpendicular to wave direction (e.g., water waves).<\/li>\n<\/ul>\n<p data-start=\"192\" data-end=\"230\"><strong data-start=\"196\" data-end=\"230\">Wave Characteristics of Sound:<\/strong><\/p>\n<ul data-start=\"232\" data-end=\"754\">\n<li><strong data-start=\"234\" data-end=\"266\">Compression and Rarefaction:<\/strong> Sound waves are made of compressions (high pressure\/density) and rarefactions (low pressure\/density).<\/li>\n<li><strong style=\"font-size: 16px;\" data-start=\"371\" data-end=\"390\">Wavelength (\u03bb):<\/strong><span style=\"font-size: 16px;\"> Distance between two consecutive compressions or rarefactions.<\/span><\/li>\n<li><strong data-start=\"456\" data-end=\"474\">Amplitude (A) <\/strong>(loudness)<strong data-start=\"456\" data-end=\"474\">:<\/strong> Maximum disturbance from the mean position.<\/li>\n<li><strong data-start=\"555\" data-end=\"573\">Frequency (\u03bd) <\/strong>(pitch)<strong data-start=\"555\" data-end=\"573\">:<\/strong> Number of oscillations per second. Measured in hertz (Hz).<\/li>\n<li><strong data-start=\"666\" data-end=\"686\">Time Period (T):<\/strong> Time taken to complete one oscillation. v = 1\/T<span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ul>\n<p data-start=\"756\" data-end=\"783\"><strong data-start=\"760\" data-end=\"783\">Pitch and Loudness:<\/strong><\/p>\n<ul data-start=\"785\" data-end=\"924\">\n<li><strong data-start=\"787\" data-end=\"796\">Pitch<\/strong> is related to frequency: Higher frequency = Higher pitch.<\/li>\n<li><strong data-start=\"857\" data-end=\"869\">Loudness<\/strong> depends on amplitude. Larger amplitude = louder sound.<\/li>\n<\/ul>\n<p data-start=\"1047\" data-end=\"1074\"><strong data-start=\"1051\" data-end=\"1074\">Quality and Timbre:<\/strong><\/p>\n<ul data-start=\"1076\" data-end=\"1308\">\n<li><strong data-start=\"1078\" data-end=\"1087\">Tone:<\/strong> Pleasant sound of single frequency.<\/li>\n<li><strong data-start=\"1126\" data-end=\"1135\">Note:<\/strong> Sound made of multiple frequencies, musical.<\/li>\n<li><strong data-start=\"1183\" data-end=\"1193\">Noise:<\/strong> Unpleasant, irregular sound.<\/li>\n<li><strong data-start=\"1225\" data-end=\"1236\">Timbre:<\/strong> Quality that helps distinguish two sounds with same pitch and loudness.<\/li>\n<\/ul>\n<p data-start=\"926\" data-end=\"949\"><strong data-start=\"930\" data-end=\"949\">Speed of Sound<\/strong><\/p>\n<ul data-start=\"951\" data-end=\"1045\">\n<li>Depends on the medium: <span class=\"katex\"><span class=\"katex-mathml\">v = \u03bb \u00d7 v <\/span><\/span>(Speed = Wavelength \u00d7 Frequency)<\/li>\n<li>Speed of sound is determined by the medium and its temperature.<\/li>\n<\/ul>\n<p><strong>Reflection of Sound<\/strong><\/p>\n<ul>\n<li>Like light, sound reflects from surfaces, obeying the laws of reflection. Angle of incidence = angle of reflection.<\/li>\n<li><strong>Echo<\/strong> is reflected sound heard after 0.1s. Minimum distance for echo: 17.2 meters.<\/li>\n<li>Reverberation, Repeated reflection of sound causing persistence. Unwanted in auditoriums; reduced using sound-absorbing materials.<\/li>\n<li>megaphones, horns, stethoscopes use sound reflection. Concert halls have curved ceilings to spread sound evenly.<\/li>\n<\/ul>\n<p><strong>Range of Hearing<\/strong><\/p>\n<ul>\n<li>Below 20 Hz: Infrasonic (e.g., elephants, earthquakes).<\/li>\n<li>Human hearing range: 20 Hz to 20,000 Hz.<\/li>\n<li>Above 20 kHz: Ultrasonic (e.g., dolphins, bats, moths).<\/li>\n<\/ul>\n<p><strong>Applications of Ultrasound<\/strong><\/p>\n<ul>\n<li><strong data-start=\"392\" data-end=\"404\">Cleaning<\/strong>: Used for cleaning intricate items like electronic components, spiral tubes, etc., by dislodging dirt via high-frequency waves in a solution.<\/li>\n<li><strong data-start=\"551\" data-end=\"569\">Flaw Detection<\/strong>: Used to detect internal cracks or holes in metal blocks. Ultrasonic waves reflect back from defects, revealing their presence.<\/li>\n<li><strong data-start=\"739\" data-end=\"759\">Echocardiography<\/strong>: Reflecting ultrasound from the heart to form an image.<\/li>\n<li><strong data-start=\"820\" data-end=\"853\">Ultrasound Imaging (Scanning)<\/strong>: Used to view internal organs like liver, kidney, gall bladder, uterus, etc. Helps detect <strong data-start=\"944\" data-end=\"965\">stones and tumors<\/strong> by reflecting waves from tissue boundaries.<\/li>\n<\/ul>\n<p><strong>Human voice<\/strong> is produced due to vibrations in vocal cords. <strong>Hearing Aid<\/strong> is An electronic device used by people with hearing loss. It consists of a microphone, amplifier, and speaker.<\/p>\n<\/div>\n<\/div>\n<hr \/>\n<p><span style=\"color: #ff0000;\"><strong>Related Links<\/strong><\/span><\/p>\n<ul>\n<li><strong>General Science : Questions for Competitive Exams<\/strong> \ud83d\udd17<\/li>\n<\/ul>\n<p><strong><a href=\"https:\/\/thequickknowledge.com\/exam\/general-science\/\">General Science<\/a>, <a href=\"https:\/\/thequickknowledge.com\/exam\/study-materials\/\">Study Materials<\/a>, <a href=\"https:\/\/thequickknowledge.com\/exam\/current-affairs\/\">Current Affairs<\/a>, <a href=\"https:\/\/thequickknowledge.com\/exam\/practice-questions\/\">Practice Questions<\/a>,\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Waves and Sound Sound as a form of energy, requires a medium (solid, liquid, or gas) doesn\u2019t travel in vacuum.\u00a0transferring the disturbance through the medium in the form of a wave. There are two types of waves: Longitudinal waves: Particles oscillate parallel to wave direction (e.g., sound waves). Sound waves are mechanical longitudinal waves.\u00a0Sound travels [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"no-sidebar","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":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[137],"tags":[138],"class_list":["post-3453","post","type-post","status-publish","format-standard","hentry","category-general-science","tag-general-science-notes"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Waves and Sound Sound as a form of energy, requires a medium (solid, liquid, or gas) doesn\u2019t travel in vacuum. transferring the disturbance through the medium in the form of a wave. 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There are two types of waves: Longitudinal waves: Particles oscillate parallel to wave direction (e.g., sound waves). Sound waves are mechanical longitudinal waves. Sound travels","og:url":"https:\/\/thequickknowledge.com\/exam\/waves-and-sound\/","og:image":"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png","og:image:secure_url":"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png","article:published_time":"2025-07-21T17:17:34+00:00","article:modified_time":"2025-07-22T03:41:41+00:00","twitter:card":"summary_large_image","twitter:title":"Waves and Sound- Physics | General Science - The Quick Knowledge","twitter:description":"Waves and Sound Sound as a form of energy, requires a medium (solid, liquid, or gas) doesn\u2019t travel in vacuum. transferring the disturbance through the medium in the form of a wave. There are two types of waves: Longitudinal waves: Particles oscillate parallel to wave direction (e.g., sound waves). Sound waves are mechanical longitudinal waves. Sound travels","twitter:image":"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png"},"aioseo_meta_data":{"post_id":"3453","title":null,"description":null,"keywords":null,"keyphrases":{"focus":{"keyphrase":"Waves and Sound","score":58,"analysis":{"keyphraseInTitle":{"score":9,"maxScore":9,"error":0},"keyphraseInDescription":{"score":3,"maxScore":9,"error":1},"keyphraseLength":{"score":9,"maxScore":9,"error":0,"length":3},"keyphraseInURL":{"score":5,"maxScore":5,"error":0},"keyphraseInIntroduction":{"score":3,"maxScore":9,"error":1},"keyphraseInSubHeadings":[],"keyphraseInImageAlt":[],"keywordDensity":{"score":0,"type":"low","maxScore":9,"error":1}}},"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"BlogPosting","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":{"faqs":[],"keyPoints":[],"titles":[],"descriptions":[],"socialPosts":{"email":[],"linkedin":[],"twitter":[],"facebook":[],"instagram":[]}},"created":"2025-07-21 17:17:35","updated":"2025-07-22 03:42:27","seo_analyzer_scan_date":null,"focus_keyword":"Waves and Sound","additional_keywords":null,"truseo_locale":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/thequickknowledge.com\/exam\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/thequickknowledge.com\/exam\/category\/general-science\/\" title=\"General Science\">General Science<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tWaves and Sound- Physics | General Science\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/thequickknowledge.com\/exam"},{"label":"General Science","link":"https:\/\/thequickknowledge.com\/exam\/category\/general-science\/"},{"label":"Waves and Sound- Physics | General Science","link":"https:\/\/thequickknowledge.com\/exam\/waves-and-sound\/"}],"_links":{"self":[{"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/posts\/3453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/comments?post=3453"}],"version-history":[{"count":5,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/posts\/3453\/revisions"}],"predecessor-version":[{"id":3462,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/posts\/3453\/revisions\/3462"}],"wp:attachment":[{"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/media?parent=3453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/categories?post=3453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/tags?post=3453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}