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Question

The apparent coefficient of expansion of a liquid when heated in a copper vessel is C and when heated in a silver vessel is S. If A is the linear coefficient of expansion of copper, then the linear coefficient of expansion of silver is


A

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B

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C

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D

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Solution

The correct option is B


γr=γa+γv; where γr = coefficient of real expansion, γa = coefficient of apparent expansion and γv = coefficinet of expansion of vessel.
For copper γr=C+3 αCu=C+3A
For silver γr=S+3 αAg
C+3A=S+3αAgαAg=CS+3A3


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