How do different materials exhibit different thermal expansion behaviours?
مختلف مادوں کا حرارتی پھیلاؤ مختلف کیوں ہوتا ہے؟
Solution & explanation
Their bonding and particle interactions differ, producing different expansion coefficients. Equal lengths under the same ΔT expand differently when α differs.
Independent study answer. Original textbook ↗ · English-medium printed page 17.