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Question

The co-efficient of apparent expansion of a liquid in a vessel A is 18×104/oC and in vessel B is 21×104/oC. The difference in the coefficients of linear expansions of A and B is :


A
1×103/oC
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B
1×106/oC
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C
1×105/oC
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D
1×104/oC
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Solution

The correct option is B 1×104/oC
γr=γa+γg=γa+3αg
γr=γa1+3α1=γa2+3α2 for both vessels A and B
18×104+3α1=21×104+3α2
3(α1α2)=3×104
α1α2=1×104/ 0C

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