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Q.

A thick glass tumbler gets cracks when boiling water is poured into it, because of

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a

Poor quality

b

unequal expansion

c

αof glass is zero

d

αof glass is maximum

answer is B.

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Detailed Solution

From the theory of examples of thermal expansions.

A – Not because of quality

B – Change in shape takes place due to unequal expansion which is not supported by elasticity leads to cracks.

D – Are not relevant. 

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