A) \[{{295}^{o}}C\]
B) \[{{265}^{o}}C\]
C) \[{{545}^{o}}C\]
D) \[{{575}^{o}}C\]
Correct Answer: C
Solution :
\[{{t}_{n}}=\frac{{{t}_{1}}+{{t}_{c}}}{2}\]Þ \[280=\frac{{{t}_{i}}+15}{2}\] Þ \[{{t}_{i}}={{545}^{o}}C\]
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