Question
Describe some experiments to demonstrate the thermal expansion of a solid.
Answer
To show – Thermal expansion in solids
Experiment
Gravesand’s ball and ring experiment
Take a metallic ball and ring such that the ball can pass through the ring easily. The ball is heated, and the ball cannot pass through the ring.
This is because the solid ball expands in size. On cooling, it can pass through the ring.
Observation
Solids expand on heating and contract on cooling.
