{"id":84524,"date":"2025-06-01T02:34:20","date_gmt":"2025-06-01T02:34:20","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=84524"},"modified":"2025-06-01T02:34:20","modified_gmt":"2025-06-01T02:34:20","slug":"two-systems-are-said-to-be-in-thermal-equilibrium-if-and-only-if","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/two-systems-are-said-to-be-in-thermal-equilibrium-if-and-only-if\/","title":{"rendered":"Two systems are said to be in thermal equilibrium if and only if :"},"content":{"rendered":"

Two systems are said to be in thermal equilibrium if and only if :<\/p>\n

[amp_mcq option1=”there can be a heat flow between them even if they are at different temperatures” option2=”there cannot be a heat flow between them even if they are at different temperatures” option3=”there is no heat flow between them” option4=”their temperatures are slightly different” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-1 – 2016<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nTwo systems are in thermal equilibrium if there is no heat flow between them.
\n<\/section>\n
\nAccording to the zeroth law of thermodynamics, if two systems are in thermal equilibrium with a third system, they are also in thermal equilibrium with each other. Thermal equilibrium is the state where there is no net flow of heat between objects in thermal contact. This condition is met when the objects are at the same temperature.
\n<\/section>\n
\nHeat flow is the transfer of thermal energy from a region of higher temperature to a region of lower temperature. If the temperatures are different and the systems are in thermal contact, heat will flow until thermal equilibrium is reached and their temperatures become equal.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Two systems are said to be in thermal equilibrium if and only if : [amp_mcq option1=”there can be a heat flow between them even if they are at different temperatures” option2=”there cannot be a heat flow between them even if they are at different temperatures” option3=”there is no heat flow between them” option4=”their temperatures are … <\/p>\n

Detailed SolutionTwo systems are said to be in thermal equilibrium if and only if :<\/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":[1087],"tags":[1098,1130,1128],"class_list":["post-84524","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1098","tag-heat-and-thermodynamics","tag-physics","no-featured-image-padding"],"yoast_head":"\nTwo systems are said to be in thermal equilibrium if and only if :<\/title>\n<meta name=\"description\" content=\"Two systems are in thermal equilibrium if there is no heat flow between them. According to the zeroth law of thermodynamics, if two systems are in thermal equilibrium with a third system, they are also in thermal equilibrium with each other. Thermal equilibrium is the state where there is no net flow of heat between objects in thermal contact. This condition is met when the objects are at the same temperature.\" \/>\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\/two-systems-are-said-to-be-in-thermal-equilibrium-if-and-only-if\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Two systems are said to be in thermal equilibrium if and only if :\" \/>\n<meta property=\"og:description\" content=\"Two systems are in thermal equilibrium if there is no heat flow between them. According to the zeroth law of thermodynamics, if two systems are in thermal equilibrium with a third system, they are also in thermal equilibrium with each other. Thermal equilibrium is the state where there is no net flow of heat between objects in thermal contact. 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