A temperature scale has a lower fixed point of 40mm and a upper fixed point...
PHYSICS
JAMB 1995
A temperature scale has a lower fixed point of 40mm and a upper fixed point of 200mm. What is the reading on this scale when a thermometer reads 60oC?
- A. 33.3mm
- B. 36.0mm
- C. 96.0mm
- D. 136.0mm
Correct Answer: D. 136.0mm
Explanation
200mm ..... 100oC
Xmm ..... 60oC
400mm ..... 0oC
\(\frac{x - 40}{200 - 40}\) = \(\frac{60 - 0}{100 - 0}\)
X = 136mm
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