A composite rod consists of a steel rod of length 25 cm and area 2A and a copper rod of…

Physics · JEE Advanced · NTA Exams — Properties of Solids and Liquids

1. the extension produced in copper rod will be more
2. the extension in copper and steel parts will be in the ratio 1 : 8
3. the stress applied to copper rod will be more
4. no extension will be produced in the steel rod

Answer

(B) the extension in copper and steel parts will be in the ratio 1 : 8

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