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A brass rod of length 50 cm and diameter...

A brass rod of length 50 cm and diameter 3.0 mm is joined to a steel rod of the same length and diameter. What is the change in length of the combined rod at `250^(@)C`, if the original lengths are at `40.0^(@)C` ? there a 'thermal stress' developed at the junction ? The ends of the rod are free to expand (Coefficient of linear expansion of brass `=2.0xx10^(-5)K^(-1)," steel "=1.2xx10^(-5)K^(-1)`).

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For answer see Section - B Textual Exercise Q. no. 11.10
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KUMAR PRAKASHAN-THERMAL PROPERTIES OF MATTER-Question Paper (Section - C) Do as directed : (Word limit of answer is 10) (Each carry 3 mark)
  1. A hole is drilled in a copper sheet. The diameter of the hole is 4.24 ...

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  2. A brass rod of length 50 cm and diameter 3.0 mm is joined to a steel r...

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