A) \[{{24}^{o}}C\]
B) \[{{28}^{o}}C\]
C) \[{{22}^{o}}C\]
D) \[{{25}^{o}}C\]
Correct Answer: A
Solution :
According to Newtons law of cooling, \[\frac{80-64}{5}=\alpha \left[ \frac{80+64}{2}-T \right]\] ... (i) and \[\frac{80-52}{10}=\alpha \left[ \frac{80+52}{2}-T \right]\] ... (ii) where T is the temperature of the surrounding. Solving Eqs. (i) and (ii), we get \[T={{24}^{o}}C\]You need to login to perform this action.
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