An iron ring is heated. Which of the following statement about it is incorrect?
(a) The ring expands.
(b) The ring almost comes to the same size on cooling.
(c) The change in this case is reversed.
(d) The ring changes its shape and the change cannot be reversed.

Correct Answer: (d) The ring changes its shape and the change cannot be reversed.

Explanation: The ring expands on heating and comes back to its original size on cooling. The change is reversible.

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Updated on: 01-Feb-2023

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