A thermocouple thermometer is connected to a millivoltmeter which can read up to 10mV. When one junction is in ice at 0^\circC and the other is steam at 100^\circC, the millivoltmeter reads 4mV. What is the maximum temperature which this arrangement can measure
A
100\(^o\)C
B
248\(^o\)C
C
250\(^o\)C
D
350\(^o\)C
Verified Correct Answer: C.
Physical Principles & Numerical Solution
t\(_\theta\) - t\(_o\) = 10,
t\(_{100}\) - t\(_o\) = 4
\theta
=
t\(_\theta\) - t\(_o\)
t\(_{100}\) - t\(_o\)
\times
100
10
4
\times
100
=
250^\circC
Source: Myschool Past Questions Archive (Record #55103)