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Question

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

A
C+S3A3
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B
C+3AS3
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C
S+3CA3
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D
C+2S3A3
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Solution

The correct option is A C+3AS3
Given:
Apparent expansion coefficient of liquid when heated in Copper vessel = C
Coefficient of linear expansion of copper= A
Apparent expansion coefficient of liquid when heated in silver vessel = S
Liquid expansion coefficient = x (say)
Solution:
For copper,
C= x -3A ( volume expansion = 3 × linear expansion)
For silver,
S =x - 3αAg
Since liquid expansion coefficient is same,
C+ 3A = S+ 3αAg
C+3AS=3αAg
αAg=C+3AS3
Hence, B is the correct option.




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