A) \[15.5{}^\circ C\]
B) \[15{}^\circ C\]
C) \[16{}^\circ C\]
D) \[16.6{}^\circ C\]
Correct Answer: D
Solution :
Temperature of the mixture is given by \[T=\frac{{{n}_{1}}{{m}_{1}}+{{n}_{2}}{{m}_{2}}}{{{n}_{1}}+{{n}_{2}}}\] \[T=\frac{10\times 10+20\,\times 20}{10+20}=\frac{500}{30}\approx {{16.6}^{o}}C\]
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