Question

why and how two glass tumbler that get fixed tightly to each other can be separated?​

Answer 1

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Answer:

• Sometimes stacked glasses get stuck inside each other.
• This often happens because the glasses have expanded when washed in hot water, then contracted as they cool.

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Answer 2

For example water absorb heat energy to convert into steam and release heat energy to convert into ice. ... Due to this reason generally we put two glass tumblers that fixed tightly to each other in hot water. After some time the tumblers are separated very easily as the lower tumbler gets expanded.