{"id":6957,"date":"2020-10-13T15:01:57","date_gmt":"2020-10-13T09:31:57","guid":{"rendered":"http:\/\/astan.lk\/al_virtualclassroom\/?p=6957"},"modified":"2020-10-13T15:01:53","modified_gmt":"2020-10-13T09:31:53","slug":"physical-quantities-and-units","status":"publish","type":"post","link":"https:\/\/astan.lk\/al_virtualclassroom\/physical-quantities-and-units\/","title":{"rendered":"Physical Quantities and Dimensions"},"content":{"rendered":"

There are three types of physical quantities.<\/strong><\/p>\n

    \n
  1. Fundamental physical quantities<\/li>\n
  2. Supplementary physical quantities<\/li>\n
  3. Derived physical quantities<\/li>\n<\/ol>\n

     <\/p>\n

    The internationally accepted standard units and dimensions of the physical quantities are given below.<\/p>\n

    Fundamental physical quantities \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0SI unit \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Dimensions<\/strong><\/p>\n

     <\/p>\n

      \n
    • Mass \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0kg \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 M<\/li>\n
    • Time \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 s \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 T<\/li>\n
    • Length \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 m \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 L<\/li>\n<\/ul>\n
        \n
      • Temperature \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 K<\/li>\n
      • Electric current \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 A<\/li>\n
      • Amuont of substance \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 mol<\/li>\n
      • Luminous intensity \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Cd<\/li>\n<\/ul>\n

         <\/p>\n

        Supplementary physical quantities<\/strong><\/p>\n

          \n
        • Angle in a plane \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0rd<\/li>\n
        • Solid angle \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Sr<\/li>\n<\/ul>\n

           <\/p>\n

          Derived physical quantities<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
          \u00a0Physical quantity<\/strong><\/th>\n\u00a0Unit<\/th>\nDimesion<\/th>\n<\/tr>\n
          \u00a0Speed<\/td>\n\u00a0\u00a0ms-1 <\/sup><\/td>\n\u00a0LT-1<\/sup><\/td>\n<\/tr>\n
          \u00a0Velocity<\/td>\n\u00a0ms-1<\/sup><\/td>\n\u00a0LT-1<\/sup><\/td>\n<\/tr>\n
          \u00a0Acceleration<\/td>\n\u00a0ms-2<\/sup><\/td>\n\u00a0LT-2<\/sup><\/td>\n<\/tr>\n
          \u00a0Pressure<\/td>\n\u00a0 kgm-1<\/sup>s-2<\/sup> =Pa<\/td>\n\u00a0ML-1<\/sup>T-2<\/sup><\/td>\n<\/tr>\n
          \u00a0Work<\/td>\n\u00a0kgm2<\/sup>s-2<\/sup>=J<\/td>\n\u00a0ML2<\/sup>T-2<\/sup><\/td>\n<\/tr>\n
          \u00a0Energy<\/td>\n\u00a0kgm2<\/sup>s-2<\/sup>=J<\/td>\n\u00a0ML2<\/sup>T-2<\/sup><\/td>\n<\/tr>\n
          \u00a0Power<\/td>\n\u00a0kgm2<\/sup>s-3<\/sup>=W<\/td>\n\u00a0ML2<\/sup>T-3<\/sup><\/td>\n<\/tr>\n
          \u00a0Frequency<\/td>\n\u00a0s-1<\/sup>=Hz<\/td>\n\u00a0T-1<\/sup><\/td>\n<\/tr>\n
          \u00a0Area<\/td>\n\u00a0m2<\/sup><\/td>\n\u00a0L2<\/sup><\/td>\n<\/tr>\n
          \u00a0Volume<\/td>\n\u00a0 m3<\/sup><\/td>\n\u00a0 L3<\/sup><\/td>\n<\/tr>\n
          \u00a0Density<\/td>\n\u00a0 kgm-3<\/sup><\/td>\n\u00a0ML-3<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Pysical quantities which can be defined in terms of fundamental quantities are called derived quantities.<\/p>\n","protected":false},"excerpt":{"rendered":"

          There are three types of physical quantities. Fundamental physical quantities Supplementary physical quantities Derived physical quantities   The internationally accepted standard units and dimensions of the physical quantities are given below. Fundamental physical quantities \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0SI unit \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Dimensions   Mass […]<\/p>\n","protected":false},"author":842,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[16,1944],"tags":[],"class_list":["post-6957","post","type-post","status-publish","format-standard","hentry","category-physics","category-unit-01-physics"],"acf":[],"yoast_head":"\nPhysical Quantities and Dimensions - Learning & Education Portal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/astan.lk\/al_virtualclassroom\/physical-quantities-and-units\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Physical Quantities and Dimensions - Learning & Education Portal\" \/>\n<meta property=\"og:description\" content=\"There are three types of physical quantities. 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