The lower and upper fixed point of a thermometer are 30mm and 180mm respectively. Calculate...
PHYSICS
WAEC 2005
The lower and upper fixed point of a thermometer are 30mm and 180mm respectively. Calculate the temperature in degrees Celsius when the thermometer reads 45mm
- A. 10.0oC
- B. 15.0oC
- C. 20.0oC
- D. 30.0oC
Correct Answer: A. 10.0oC
Explanation
100....180
A......45
0......30
\(\frac{45 - 30}{180 - 30} = \frac{A - 0}{100 - 0}\)
A = \(\frac{15 \times 100}{150} = 10^oC\)
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