The lower and upper fixed point of a thermomete... - WAEC Physics 2005 Question
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 option: a
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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