{"id":87769,"date":"2025-06-01T06:53:50","date_gmt":"2025-06-01T06:53:50","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87769"},"modified":"2025-06-01T06:53:50","modified_gmt":"2025-06-01T06:53:50","slug":"which-one-of-the-following-cannot-be-the-unit-of-frequency-of-a-sound","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-cannot-be-the-unit-of-frequency-of-a-sound\/","title":{"rendered":"Which one of the following cannot be the unit of frequency of a sound"},"content":{"rendered":"

Which one of the following cannot be the unit of frequency of a sound wave ?<\/p>\n

[amp_mcq option1=”dB” option2=”s\u207b\u00b9” option3=”Hz” option4=”min\u207b\u00b9” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nFrequency is defined as the number of occurrences of a repeating event per unit of time. Its standard SI unit is Hertz (Hz), which is equivalent to inverse seconds (s\u207b\u00b9). Other units based on time inverse are also valid units for frequency, such as per minute (min\u207b\u00b9), per hour, etc.
\nA) dB (decibel) is a logarithmic unit used to measure the ratio of a physical quantity (usually power or intensity) to a reference value. It is commonly used to quantify sound intensity or loudness, not frequency.
\nB) s\u207b\u00b9 (per second) is the standard unit of frequency, equivalent to Hertz.
\nC) Hz (Hertz) is the standard SI unit for frequency.
\nD) min\u207b\u00b9 (per minute) represents cycles or events per minute, which is a valid unit for frequency (though not the SI unit).
\nTherefore, decibel (dB) cannot be a unit of frequency.
\n<\/section>\n
\nFrequency measures how often something happens per unit time (cycles\/time). Decibel measures relative intensity or amplitude on a logarithmic scale.
\n<\/section>\n
\nThe frequency of a sound wave determines its pitch. Higher frequency means higher pitch. The amplitude or intensity of a sound wave is related to its loudness, often measured in decibels.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following cannot be the unit of frequency of a sound wave ? [amp_mcq option1=”dB” option2=”s\u207b\u00b9” option3=”Hz” option4=”min\u207b\u00b9” correct=”option1″] This question was previously asked in UPSC NDA-1 – 2021 Download PDFAttempt Online Frequency is defined as the number of occurrences of a repeating event per unit of time. Its standard SI unit … <\/p>\n

Detailed SolutionWhich one of the following cannot be the unit of frequency of a sound<\/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":[1110,1140,1128],"class_list":["post-87769","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1110","tag-measurement-unit","tag-physics","no-featured-image-padding"],"yoast_head":"\nWhich one of the following cannot be the unit of frequency of a sound<\/title>\n<meta name=\"description\" content=\"Frequency is defined as the number of occurrences of a repeating event per unit of time. Its standard SI unit is Hertz (Hz), which is equivalent to inverse seconds (s\u207b\u00b9). Other units based on time inverse are also valid units for frequency, such as per minute (min\u207b\u00b9), per hour, etc. A) dB (decibel) is a logarithmic unit used to measure the ratio of a physical quantity (usually power or intensity) to a reference value. It is commonly used to quantify sound intensity or loudness, not frequency. B) s\u207b\u00b9 (per second) is the standard unit of frequency, equivalent to Hertz. C) Hz (Hertz) is the standard SI unit for frequency. D) min\u207b\u00b9 (per minute) represents cycles or events per minute, which is a valid unit for frequency (though not the SI unit). Therefore, decibel (dB) cannot be a unit of frequency. Frequency measures how often something happens per unit time (cycles\/time). Decibel measures relative intensity or amplitude on a logarithmic scale.\" \/>\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-one-of-the-following-cannot-be-the-unit-of-frequency-of-a-sound\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following cannot be the unit of frequency of a sound\" \/>\n<meta property=\"og:description\" content=\"Frequency is defined as the number of occurrences of a repeating event per unit of time. Its standard SI unit is Hertz (Hz), which is equivalent to inverse seconds (s\u207b\u00b9). Other units based on time inverse are also valid units for frequency, such as per minute (min\u207b\u00b9), per hour, etc. A) dB (decibel) is a logarithmic unit used to measure the ratio of a physical quantity (usually power or intensity) to a reference value. It is commonly used to quantify sound intensity or loudness, not frequency. B) s\u207b\u00b9 (per second) is the standard unit of frequency, equivalent to Hertz. C) Hz (Hertz) is the standard SI unit for frequency. D) min\u207b\u00b9 (per minute) represents cycles or events per minute, which is a valid unit for frequency (though not the SI unit). Therefore, decibel (dB) cannot be a unit of frequency. Frequency measures how often something happens per unit time (cycles\/time). Decibel measures relative intensity or amplitude on a logarithmic scale.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-cannot-be-the-unit-of-frequency-of-a-sound\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:53:50+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 one of the following cannot be the unit of frequency of a sound","description":"Frequency is defined as the number of occurrences of a repeating event per unit of time. 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