Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

A rod is composed of one half glass and one half copper. Four pins A, B, C and D are fixed to the rod using wax. The rod is heated at the centre, as shown. The pins drop off when the wax melts. Which pin drops off first?

  • AA
  • BB
  • CC
  • DD

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