The metal ball can just pass through the hole of a metal ring formed out of a strip. When the ball is heated it gets stuck. But when the metal ring is heated.
A) The ball will not pass through because there is no change in the ring.
B) The ball can now pass through it because the ring diameter expands on heating.
C) The ball gets stuck because the diameter of the hole decreases on expansion.
D) None of the above
Correct Answer: B
Solution :
The ball can now pass through it because the ring diameter expands on heating.
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