When the temperature of a copper rod increases, does its length remain the same, increase, decrease or double?
تانبے کی سلاخ گرم ہو تو لمبائی وہی رہتی، بڑھتی، گھٹتی یا دوگنی ہوتی ہے؟
Solution & explanation
Increases: particles vibrate more and their average separation usually increases. Doubling is not implied.
Independent study answer. Original textbook ↗ · English-medium printed page 17.