Question

In arrangements, A and B shown in Figure 4.7, pins P and Q are fixed to a metal loop and an iron rod with the help of wax. In which case are both the pins likely to fall at different times? Explain.

Answer 1

In the case of B, pin P will fall before pin Q because the heat will reach pin P first. In the case of A, the heat travels in both directions and pins P and Q will fall simultaneously.