{"id":88698,"date":"2025-06-01T07:18:36","date_gmt":"2025-06-01T07:18:36","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88698"},"modified":"2025-06-01T07:18:36","modified_gmt":"2025-06-01T07:18:36","slug":"in-an-incandescent-electric-bulb-the-filament-of-the-bulb-is-made-up","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-an-incandescent-electric-bulb-the-filament-of-the-bulb-is-made-up\/","title":{"rendered":"In an incandescent electric bulb, the filament of the bulb is made up"},"content":{"rendered":"

In an incandescent electric bulb, the filament of the bulb is made up of which metal ?<\/p>\n

[amp_mcq option1=”Aluminium” option2=”Copper” option3=”Tungsten” option4=”Silver” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2020<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe filament in an incandescent electric bulb is made up of tungsten. Tungsten is used because it has the highest melting point (3422 \u00b0C) among all pure metals and remains solid at the very high temperatures required to produce light efficiently (around 2000-2500 \u00b0C). It also has high tensile strength and low vapor pressure at high temperatures.
\n<\/section>\n
\nThe principle behind an incandescent bulb is resistive heating: an electric current passes through the filament, heating it to incandescence (glowing white hot) and emitting light. The bulb is usually filled with an inert gas (like argon or nitrogen) to reduce the evaporation of the tungsten filament, prolonging its life.
\n<\/section>\n
\nAluminium, Copper, and Silver are good conductors but have significantly lower melting points than tungsten and would melt or vaporize rapidly at the temperatures required for incandescence.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

In an incandescent electric bulb, the filament of the bulb is made up of which metal ? [amp_mcq option1=”Aluminium” option2=”Copper” option3=”Tungsten” option4=”Silver” correct=”option3″] This question was previously asked in UPSC NDA-2 – 2020 Download PDFAttempt Online The filament in an incandescent electric bulb is made up of tungsten. Tungsten is used because it has the … <\/p>\n

Detailed SolutionIn an incandescent electric bulb, the filament of the bulb is made up<\/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":[1288,1160,1128],"class_list":["post-88698","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1288","tag-physical-properties-of-materials","tag-physics","no-featured-image-padding"],"yoast_head":"\nIn an incandescent electric bulb, the filament of the bulb is made up<\/title>\n<meta name=\"description\" content=\"The filament in an incandescent electric bulb is made up of tungsten. Tungsten is used because it has the highest melting point (3422 \u00b0C) among all pure metals and remains solid at the very high temperatures required to produce light efficiently (around 2000-2500 \u00b0C). It also has high tensile strength and low vapor pressure at high temperatures. The principle behind an incandescent bulb is resistive heating: an electric current passes through the filament, heating it to incandescence (glowing white hot) and emitting light. The bulb is usually filled with an inert gas (like argon or nitrogen) to reduce the evaporation of the tungsten filament, prolonging its life.\" \/>\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\/in-an-incandescent-electric-bulb-the-filament-of-the-bulb-is-made-up\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In an incandescent electric bulb, the filament of the bulb is made up\" \/>\n<meta property=\"og:description\" content=\"The filament in an incandescent electric bulb is made up of tungsten. Tungsten is used because it has the highest melting point (3422 \u00b0C) among all pure metals and remains solid at the very high temperatures required to produce light efficiently (around 2000-2500 \u00b0C). It also has high tensile strength and low vapor pressure at high temperatures. The principle behind an incandescent bulb is resistive heating: an electric current passes through the filament, heating it to incandescence (glowing white hot) and emitting light. The bulb is usually filled with an inert gas (like argon or nitrogen) to reduce the evaporation of the tungsten filament, prolonging its life.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/in-an-incandescent-electric-bulb-the-filament-of-the-bulb-is-made-up\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:18:36+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":"In an incandescent electric bulb, the filament of the bulb is made up","description":"The filament in an incandescent electric bulb is made up of tungsten. 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