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A thermometer which has upper fixed points and lower fixed points equal to $\;95^{0}\;$ and $\;5^{0}\;$ respectively , reads $\;59^{0}\;$. What is the temperature on the centigrade scale .


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Answer : $\;60^{\circ}C$
Explanation :
$\large\frac{\text{Temperature-lower fixed point}}{\text{upper fixed point - lower fixed point}}$$=\text{constant}$
$c=\large\frac{54}{90} $$\times 100=60^{\circ}C$
answered Mar 24, 2014 by yamini.v
edited Apr 2, 2014 by balaji.thirumalai

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