K.C.S.E Physics Q & A - MODEL 2011PP1QN04

K.C.S.E Physics Q & A - MODEL 2011PP1QN04

​Figure 3 shows an aluminum tube tightly stuck in a steel tube.

​Explain how the two tubes can be separated by applying a temperature change at the junction given that aluminum expands more than steel for the same temperature rise.

ANSWER

• Cooling; 
• Aluminum contracts more than steel for the same temperature change;