Physics-
General
Easy

Question

In a thermo couple, thermo emf produced is 3 mu V per one degree difference of temperature between the two junctions. When the cold junction of such thermocouple is at 20°C, the thermo emf is 0.3mV. The temperature of the hot junction is

  1. 80°C    
  2. 100°C    
  3. 120°C    
  4. 100 K    

The correct answer is: 120°C

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