(a)[2]
State two features of the apparatus shown in Fig. 1.1 that make the experiment fair.
(b)[1]
Explain what happens and state how she works out which metal is the better conductor.
Physics 5054 · O Level · Conduction
Conduction — practice question
A student is given two metal rods: one is copper and the other is iron. She carries out an experiment to find out which metal conducts heat better. She places the rods across a heat-proof mat on a tripod stand, with the rods touching at one end, as shown in Fig. 1.1.
At the other end of each rod, she attaches a drawing pin using a small blob of wax that has a low melting point. She then heats the ends where the rods touch, as shown.