The ice and steam points of a certain thermometer are -20^\circ and 100^\circ respectively. Calculate the Celsius temperature corresponding to 70^\circ on the thermometer
A
84.0o
B
75.0o
C
64.0o
D
58.0o
Verified Correct Answer: B.
Physical Principles & Numerical Solution
\(\frac{70 -(- 20)}{100 -(-20)} = \frac{\theta - 0}{100 - 0}\)
\(\theta = \frac{90 \times 100}{120} = 75^oC\)
Source: Myschool Past Questions Archive (Record #34024)