Thermal expansion of heated balls · CAP 2004 #Q18

Physics · thermodynamics

Problem

Two identical balls, A and B, of uniform composition and initially at the same temperature, each absorb exactly the same amount of heat. A is hanging down from the ceiling while B rests on the horizontal floor in the same room. Assuming no subsequent heat loss by the balls, which of the following statements is correct about their final temperatures, TAT_A and TBT_B, once the balls have reached their final dimension? (a) TA<TBT_A < T_B; (b) TA>TBT_A > T_B; (c) TA=TBT_A = T_B; (d) TA≤TBT_A \leq T_B.

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