The distance between the fixed points of a centigrade thermometer is 20cm. What is the...

JAMB 1987

The distance between the fixed points of a centigrade thermometer is 20cm. What is the temperature when the mercury level is 4.5cm above the lower mark?

A. 22.5^oC
B. 29.0^oC
C. 90.0^oC
D. 100.0^oC

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Correct Answer: Option A

Explanation

20cm .... 100^oC

4.5cm .... \(\theta\)

0cm ....0^oC

\(\frac{4.5 - 0}{20 - 0}\) = \(\frac{0 - 0}{100 - 0}\)

\(\theta\) = 22.5^oC

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The distance between the fixed points of a centigrade thermometer is 20cm. What is the...

Correct Answer: Option A

Explanation

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