When the cold junction of a thermocouple thermometer is at 0oC and the hot junction at 100
oC, the millivoltmeter shows a deflection of 4.2 mV towards the left. The cold junction is now
put in an unknown temperature while maintaining the hot junction at 100oC. The
millivoltmeter now shows a deflection of 5.2 mV towards the right. Calculate the unknown
temperature
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