WAEC - Physics (2005 - No. 17)
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
10.0oC
15.0oC
20.0oC
30.0oC
Explicaţie
100....180
A......45
0......30
\(\frac{45 - 30}{180 - 30} = \frac{A - 0}{100 - 0}\)
A = \(\frac{15 \times 100}{150} = 10^oC\)
A......45
0......30
\(\frac{45 - 30}{180 - 30} = \frac{A - 0}{100 - 0}\)
A = \(\frac{15 \times 100}{150} = 10^oC\)