Two rods of different materials having coefficients of thermal expansion α 1 and α 2 and…
Physics · JEE Main · NTA Exams — Thermodynamics
Two rods of different materials having coefficients of thermal expansion α1 and α2 and Young’s moduli Y1 and Y2 respectively are fixed between two rigid massive walls. The rods are heated such that these undergo the same increase in temperature. There is no bending of the rods. If α1 : α2 = 2 : 3, the thermal stresses developed in the two rods are equal, provided Y1 : Y2 is
- 2 : 3
- 1 : 1
- 3 : 2
- 4 : 9
Answer
(C) 3 : 2
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