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CBSE Class 12-science Answered

Sir  Question no 6
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Asked by shobhit | 21 Feb, 2019, 11:00: PM
answered-by-expert Expert Answer
Volume of mercury at T°C = V0 [ 1+ γmT ]
Volume of bulb at T°C  = V0 [ 1 + 3αg T]
 
excess volume of mercury = V0T(γm - 3αg )
 
crosssection Area of capillary at T°C = A0(1+2αg T)
 
Length of mercury column in capillary = begin mathsize 12px style fraction numerator V subscript 0 open parentheses gamma subscript m T space minus space 3 alpha subscript g close parentheses over denominator A subscript 0 open parentheses 1 space plus space 2 alpha subscript g T close parentheses end fraction end style  ;   hence (B) is the correct answer
Answered by Thiyagarajan K | 22 Feb, 2019, 08:38: AM

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