A thick glass tumbler cracks when boiling water is poured into it because
-
The inside expands more rapidly than the outside
- The inside expands less rapidly than the outside
- The expansion is even
- It does not expand
The correct answer is: A
Explanation
When boiling water is poured into the tumbler, the inner surface heats up and expands quickly, while the outer surface remains cooler and expands more slowly. This difference in expansion rates creates stress in the glass, leading to cracks.
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