{"id":88430,"date":"2025-06-01T07:11:04","date_gmt":"2025-06-01T07:11:04","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88430"},"modified":"2025-06-01T07:11:04","modified_gmt":"2025-06-01T07:11:04","slug":"the-following-six-6-items-consist-of-two-statements-statement-i-and-2","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-following-six-6-items-consist-of-two-statements-statement-i-and-2\/","title":{"rendered":"The following six (6) items consist of two statements, Statement I and"},"content":{"rendered":"

The following six (6) items consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below.
\nStatement I :
\nSound wave cannot propagate in vacuum.
\nStatement II :
\nSound waves are elastic waves and require a medium to propagate.<\/p>\n

[amp_mcq option1=”Both the statements are individually true and Statement II is the correct explanation of Statement I” option2=”Both the statements are individually true but Statement II is not the correct explanation of Statement I” option3=”Statement I is true but Statement II is false” option4=”Statement I is false but Statement II is true” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2018<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nStatement I is true: Sound waves are mechanical waves, meaning they require a material medium (like air, water, or solids) to propagate by vibrating particles. A vacuum is devoid of such particles, so sound cannot travel through it. Statement II is true: Sound waves are elastic waves (a type of mechanical wave) that cause disturbances in the medium’s particles, which are then transmitted through the medium. This reliance on particle interaction directly explains why a medium is required for propagation. Therefore, Statement II is the correct explanation for Statement I.
\n<\/section>\n
\n– Sound is a form of energy that travels as waves.
\n– Sound waves are longitudinal mechanical waves, causing compressions and rarefactions in the medium.
\n– The presence of a medium is essential for the vibrations to be transmitted.
\n<\/section>\n
\nElectromagnetic waves (like light, radio waves, X-rays) are not mechanical waves and can travel through a vacuum because they do not require a medium for propagation.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

The following six (6) items consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below. Statement I : Sound wave cannot propagate in vacuum. Statement II : Sound waves are elastic waves and require a medium to propagate. [amp_mcq option1=”Both the … <\/p>\n

Detailed SolutionThe following six (6) items consist of two statements, Statement I and<\/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":[1114,1128,1147],"class_list":["post-88430","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1114","tag-physics","tag-sound","no-featured-image-padding"],"yoast_head":"\nThe following six (6) items consist of two statements, Statement I and<\/title>\n<meta name=\"description\" content=\"Statement I is true: Sound waves are mechanical waves, meaning they require a material medium (like air, water, or solids) to propagate by vibrating particles. A vacuum is devoid of such particles, so sound cannot travel through it. Statement II is true: Sound waves are elastic waves (a type of mechanical wave) that cause disturbances in the medium's particles, which are then transmitted through the medium. This reliance on particle interaction directly explains why a medium is required for propagation. Therefore, Statement II is the correct explanation for Statement I. - Sound is a form of energy that travels as waves. - Sound waves are longitudinal mechanical waves, causing compressions and rarefactions in the medium. - The presence of a medium is essential for the vibrations to be transmitted.\" \/>\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-following-six-6-items-consist-of-two-statements-statement-i-and-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The following six (6) items consist of two statements, Statement I and\" \/>\n<meta property=\"og:description\" content=\"Statement I is true: Sound waves are mechanical waves, meaning they require a material medium (like air, water, or solids) to propagate by vibrating particles. A vacuum is devoid of such particles, so sound cannot travel through it. Statement II is true: Sound waves are elastic waves (a type of mechanical wave) that cause disturbances in the medium's particles, which are then transmitted through the medium. This reliance on particle interaction directly explains why a medium is required for propagation. Therefore, Statement II is the correct explanation for Statement I. - Sound is a form of energy that travels as waves. - Sound waves are longitudinal mechanical waves, causing compressions and rarefactions in the medium. - The presence of a medium is essential for the vibrations to be transmitted.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-following-six-6-items-consist-of-two-statements-statement-i-and-2\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:11:04+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 following six (6) items consist of two statements, Statement I and","description":"Statement I is true: Sound waves are mechanical waves, meaning they require a material medium (like air, water, or solids) to propagate by vibrating particles. A vacuum is devoid of such particles, so sound cannot travel through it. Statement II is true: Sound waves are elastic waves (a type of mechanical wave) that cause disturbances in the medium's particles, which are then transmitted through the medium. This reliance on particle interaction directly explains why a medium is required for propagation. Therefore, Statement II is the correct explanation for Statement I. - Sound is a form of energy that travels as waves. - Sound waves are longitudinal mechanical waves, causing compressions and rarefactions in the medium. - The presence of a medium is essential for the vibrations to be transmitted.","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-following-six-6-items-consist-of-two-statements-statement-i-and-2\/","og_locale":"en_US","og_type":"article","og_title":"The following six (6) items consist of two statements, Statement I and","og_description":"Statement I is true: Sound waves are mechanical waves, meaning they require a material medium (like air, water, or solids) to propagate by vibrating particles. A vacuum is devoid of such particles, so sound cannot travel through it. Statement II is true: Sound waves are elastic waves (a type of mechanical wave) that cause disturbances in the medium's particles, which are then transmitted through the medium. This reliance on particle interaction directly explains why a medium is required for propagation. Therefore, Statement II is the correct explanation for Statement I. - Sound is a form of energy that travels as waves. - Sound waves are longitudinal mechanical waves, causing compressions and rarefactions in the medium. - The presence of a medium is essential for the vibrations to be transmitted.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/the-following-six-6-items-consist-of-two-statements-statement-i-and-2\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:11:04+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-following-six-6-items-consist-of-two-statements-statement-i-and-2\/","url":"https:\/\/exam.pscnotes.com\/mcq\/the-following-six-6-items-consist-of-two-statements-statement-i-and-2\/","name":"The following six (6) items consist of two statements, Statement I and","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:11:04+00:00","dateModified":"2025-06-01T07:11:04+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statement I is true: Sound waves are mechanical waves, meaning they require a material medium (like air, water, or solids) to propagate by vibrating particles. 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