Question : A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole?
Option 1: Increases
Option 2: Decreases
Option 3: Remain constant
Option 4: Will increase first then decrease
Answer (1)
25th Jan, 2024
Correct Answer: Increases
Solution : The correct option is to increase .
The round hole in the centre of a metal plate enlarges when the plate is heated. The following causes account for this:
The molecules along the rim of the hole and all the other component molecules vibrate more when the metal plate is heated. The metal plate expands as a result of the molecules along the rim of the hole.
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