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
Verified Correct Answer: A.
Physical Principles & Numerical Solution
100....180
A......45
0......30
\(\frac{45 - 30}{180 - 30} = \frac{A - 0}{100 - 0}\)
A = \(\frac{15 \times 100}{150} = 10^oC\)
Source: Myschool Past Questions Archive (Record #34460)