A thermometer with an arbitrary scale S, of equal division registers -30oS at the ice...

JAMB 1991

A thermometer with an arbitrary scale S, of equal division registers -30^oS at the ice point and +90^oS at the steam point. Calculate the Celsius temperature corresponding to 60^oS

A. 25.0^oC
B. 50.0^oC
C. 66.7^oC
D. 75.0^oC

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Correct Answer: Option D

Explanation

100^oC ... 90^oS

\(\theta\)^oC ... 60^oS

0^oC ... 30^oS

\(\frac{\theta - 0}{100 - 0}\) = \(\frac{60 - (-30)}{90 - (-30)}\)

\(\theta\) = 75^oC

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A thermometer with an arbitrary scale S, of equal division registers -30oS at the ice...

Correct Answer: Option D

Explanation

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