{"id":87442,"date":"2025-06-01T06:44:17","date_gmt":"2025-06-01T06:44:17","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87442"},"modified":"2025-06-01T06:44:17","modified_gmt":"2025-06-01T06:44:17","slug":"the-speed-of-a-body-that-has-mach-number-more-than-1-is","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/","title":{"rendered":"The speed of a body that has Mach number more than 1 is"},"content":{"rendered":"

The speed of a body that has Mach number more than 1 is<\/p>\n

[amp_mcq option1=”supersonic” option2=”subsonic” option3=”300 m\/s” option4=”about 10 m\/s” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2017<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nMach number is defined as the ratio of the speed of an object in a medium to the speed of sound in that medium.
\n– Mach number = 1: Speed of the object equals the speed of sound (sonic).
\n– Mach number < 1: Speed of the object is less than the speed of sound (subsonic).\n- Mach number > 1: Speed of the object is greater than the speed of sound (supersonic).
\n– Mach number > 5: Speed of the object is much greater than the speed of sound (hypersonic).
\nThe question asks for the speed of a body that has a Mach number more than 1, which corresponds to supersonic speed.
\n<\/section>\n
\n– Mach number is a dimensionless quantity representing the ratio of speed to the speed of sound.
\n– Mach > 1 means supersonic speed.
\n– Mach < 1 means subsonic speed.\n- Mach = 1 means sonic speed.\n<\/section>\n
\nThe speed of sound varies depending on the medium (e.g., air, water) and its properties (e.g., temperature, pressure). In dry air at 15\u00b0C at sea level, the speed of sound is approximately 340 m\/s (around 1225 km\/h or 761 mph). So, a speed of 300 m\/s (Option C) is close to Mach 1 but not necessarily supersonic, and the statement about 10 m\/s (Option D) is clearly subsonic.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

The speed of a body that has Mach number more than 1 is [amp_mcq option1=”supersonic” option2=”subsonic” option3=”300 m\/s” option4=”about 10 m\/s” correct=”option1″] This question was previously asked in UPSC NDA-1 – 2017 Download PDFAttempt Online Mach number is defined as the ratio of the speed of an object in a medium to the speed of … <\/p>\n

Detailed SolutionThe speed of a body that has Mach number more than 1 is<\/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":[1101,1128,1147],"class_list":["post-87442","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1101","tag-physics","tag-sound","no-featured-image-padding"],"yoast_head":"\nThe speed of a body that has Mach number more than 1 is<\/title>\n<meta name=\"description\" content=\"Mach number is defined as the ratio of the speed of an object in a medium to the speed of sound in that medium. - Mach number = 1: Speed of the object equals the speed of sound (sonic). - Mach number < 1: Speed of the object is less than the speed of sound (subsonic). - Mach number > 1: Speed of the object is greater than the speed of sound (supersonic). - Mach number > 5: Speed of the object is much greater than the speed of sound (hypersonic). The question asks for the speed of a body that has a Mach number more than 1, which corresponds to supersonic speed. - Mach number is a dimensionless quantity representing the ratio of speed to the speed of sound. - Mach > 1 means supersonic speed. - Mach < 1 means subsonic speed. - Mach = 1 means sonic speed.\" \/>\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\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The speed of a body that has Mach number more than 1 is\" \/>\n<meta property=\"og:description\" content=\"Mach number is defined as the ratio of the speed of an object in a medium to the speed of sound in that medium. - Mach number = 1: Speed of the object equals the speed of sound (sonic). - Mach number < 1: Speed of the object is less than the speed of sound (subsonic). - Mach number > 1: Speed of the object is greater than the speed of sound (supersonic). - Mach number > 5: Speed of the object is much greater than the speed of sound (hypersonic). The question asks for the speed of a body that has a Mach number more than 1, which corresponds to supersonic speed. - Mach number is a dimensionless quantity representing the ratio of speed to the speed of sound. - Mach > 1 means supersonic speed. - Mach < 1 means subsonic speed. - Mach = 1 means sonic speed.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:44:17+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":"The speed of a body that has Mach number more than 1 is","description":"Mach number is defined as the ratio of the speed of an object in a medium to the speed of sound in that medium. - Mach number = 1: Speed of the object equals the speed of sound (sonic). - Mach number < 1: Speed of the object is less than the speed of sound (subsonic). - Mach number > 1: Speed of the object is greater than the speed of sound (supersonic). - Mach number > 5: Speed of the object is much greater than the speed of sound (hypersonic). The question asks for the speed of a body that has a Mach number more than 1, which corresponds to supersonic speed. - Mach number is a dimensionless quantity representing the ratio of speed to the speed of sound. - Mach > 1 means supersonic speed. - Mach < 1 means subsonic speed. - Mach = 1 means sonic speed.","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\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/","og_locale":"en_US","og_type":"article","og_title":"The speed of a body that has Mach number more than 1 is","og_description":"Mach number is defined as the ratio of the speed of an object in a medium to the speed of sound in that medium. - Mach number = 1: Speed of the object equals the speed of sound (sonic). - Mach number < 1: Speed of the object is less than the speed of sound (subsonic). - Mach number > 1: Speed of the object is greater than the speed of sound (supersonic). - Mach number > 5: Speed of the object is much greater than the speed of sound (hypersonic). The question asks for the speed of a body that has a Mach number more than 1, which corresponds to supersonic speed. - Mach number is a dimensionless quantity representing the ratio of speed to the speed of sound. - Mach > 1 means supersonic speed. - Mach < 1 means subsonic speed. - Mach = 1 means sonic speed.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T06:44:17+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\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/","url":"https:\/\/exam.pscnotes.com\/mcq\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/","name":"The speed of a body that has Mach number more than 1 is","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T06:44:17+00:00","dateModified":"2025-06-01T06:44:17+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Mach number is defined as the ratio of the speed of an object in a medium to the speed of sound in that medium. - Mach number = 1: Speed of the object equals the speed of sound (sonic). - Mach number < 1: Speed of the object is less than the speed of sound (subsonic). - Mach number > 1: Speed of the object is greater than the speed of sound (supersonic). - Mach number > 5: Speed of the object is much greater than the speed of sound (hypersonic). The question asks for the speed of a body that has a Mach number more than 1, which corresponds to supersonic speed. - Mach number is a dimensionless quantity representing the ratio of speed to the speed of sound. - Mach > 1 means supersonic speed. - Mach < 1 means subsonic speed. - Mach = 1 means sonic speed.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-speed-of-a-body-that-has-mach-number-more-than-1-is\/#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":"The speed of a body that has Mach number more than 1 is"}]},{"@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\/87442","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=87442"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/87442\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=87442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=87442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=87442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}