PDF chapter test TRY NOW
Take a metal ball and a metal ring of suitable diameter. Pass the metal ball through the ring.
You can observe that the metal ball can easily go through it.
Now heat the metal ball and then try to pass it through the ring. What will happen?
When the ball is heated the atoms in the ball . They start and force each other . As a result takes place. That’s why the ball through the ring.
Now let the ball cool down, and check whether it passes through the ring..What will happen?
After some time, as the ball lost the heat energy to the surrounding it and it through the ring.
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