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: Option A
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)