A) \[64{}^\circ C\]
B) \[36{}^\circ C\]
C) \[46{}^\circ C\]
D) \[72{}^\circ C\]
Correct Answer: A
Solution :
Let the temperature at distance 60 cm from point B is \[\theta \] where K = coefficient of thermal conductivity A = area of rod \[\frac{KA(100-\theta )}{40}=\frac{KA(\theta -10)}{60}\] Or \[\frac{100-\theta }{2}=\frac{\theta -10}{3}\] or \[300-3\theta =26-20\] or \[5\theta =320\] or \[\theta =64{}^\circ C\]You need to login to perform this action.
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