A) \[45{}^\circ C\]
B) \[42.85{}^\circ C\]
C) \[40{}^\circ C\]
D) \[38.5{}^\circ C\]
Correct Answer: B
Solution :
Using the relation Rate of loss of heat\[\propto \theta -{{\theta }_{D}}\] Where\[\theta \]is the average temperature in the given time interval. So, \[\frac{{{M}_{c}}(60{}^\circ -50{}^\circ )}{10}\propto \left( \frac{60{}^\circ +50{}^\circ }{2}-25{}^\circ \right)\] On solving we get \[\theta =42.85{}^\circ C\]You need to login to perform this action.
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