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
Verified Correct Answer: D.
Physical Principles & Numerical Solution
200mm ..... 100oC
Xmm ..... 60oC
400mm ..... 0oC
\(\frac{x - 40}{200 - 40}\) = \(\frac{60 - 0}{100 - 0}\)
X = 136mm
Source: Myschool Past Questions Archive (Record #27815)