JAMB - Physics (2005 - No. 25)
When very hot water is poured into two identical thin and thick glass tumblers in equal volumes, the thick one cracks because?
of the even expansion of glass
glass is a crystal
glass is a good conductor of heat
of the uneven expansion of glass
Explanation
When very hot water is poured into the thick glass tumbler, the inner surface of the glass heats up and expands more quickly than the outer part. This creates stress due to uneven expansion, leading to cracking. In contrast, the thin glass tumbler is less prone to this issue because it heats more uniformly.
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