A) \[80{}^\circ C\]
B) \[100{}^\circ C\]
C) \[120{}^\circ C\]
D) \[140{}^\circ C\]
Correct Answer: C
Solution :
Thermo emf \[=3\mu \,V{{/}^{o}}C=3\times {{10}^{-6}}V{{/}^{o}}C\] \[{{t}_{C}}={{20}^{o}}C\] Thenno emf increased to \[=0.3\text{ }mV\] \[{{t}_{h}}-{{20}^{o}}C=100\] \[{{t}_{h}}={{120}^{o}}C\]
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