16:I[8216,["972","static/chunks/972-b28da0de92681928.js","47","static/chunks/47-a7f06e9eda1ac756.js","115","static/chunks/app/%5Bexam%5D/questions/%5Byear%5D/%5Bsubject%5D/%5Bchapter%5D/%5BquestionId%5D/page-7b6f0a12b9cc0206.js"],"BackButton"] 17:I[1553,["972","static/chunks/972-b28da0de92681928.js","47","static/chunks/47-a7f06e9eda1ac756.js","115","static/chunks/app/%5Bexam%5D/questions/%5Byear%5D/%5Bsubject%5D/%5Bchapter%5D/%5BquestionId%5D/page-7b6f0a12b9cc0206.js"],"QuestionViewer"] 15:T54d,{"@context":"https://schema.org","@type":"Quiz","name":"Ts Eamcet 2023 Heat And Thermodynamics PYQ with Solution","url":"https://pyq-test-series-platform-alsjdcxu2-sameers-projects-41c5a71e.vercel.app/ts-eamcet/questions/2023/physics/heat-and-thermodynamics/mdfb97ri","educationalLevel":"Entrance exam preparation","about":"Ts Eamcet / Physics / Heat And Thermodynamics","hasPart":{"@type":"Question","name":"Ts Eamcet 2023 Heat And Thermodynamics PYQ with Solution","text":"Two rod of same area of cross-section have lengths L and 2 L and coefficients of linear expansions 2 \\alpha and a respectively. If they are welded to form a composite rod of length 3 L then the coefficient of linear expansion of the composite rod is","eduQuestionType":"mcq","acceptedAnswer":{"@type":"Answer","text":"D"},"comment":{"@type":"Comment","text":"Initial Setup : First rod: length L, coefficient of expansion 2\\alpha Second rod: length 2L, coefficient of expansion \\alpha Composite Rod: Total initial length = L + 2L = 3L Expansion Calculation: Expansion of the First Rod: \\Delta L_1 = L(2\\alpha)\\Delta T Expansion of the Second Rod: \\Delta L_2 = 2L(\\alpha)\\Delta T Total Expansion: Combine the expansions: \\Delta L_{\\text{total}} = 2L\\alpha\\Delta T + 2L\\alpha\\Delta T = 4L\\alpha\\Delta T Final Step: Given that the total increase in length of the..."}}}18:T47c,

Initial Setup :

First rod: length $L$, coefficient of expansion $2\alpha$

Second rod: length $2L$, coefficient of expansion $\alpha$

Heat And Thermodynamics

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