Aim: To observe conduction along a metal rod.
Method:
1. Set up and light a bunsen burner.
2. Smear a small amount of vaseline on the head of each drawing pin.
3. Attach the drawing pins at even intervals along the length of the metal rod.
4. Clamp one end of the metal rod to a retort stand
5. Position the retort stand so the unclamped end of the metal rod is in the Bunsen flame and start the stopwatch.
6. Record the time it takes for each pin to drop in the table below
Results: As the rod got hotter, the vaseline melted and the pins fell of one by one
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