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Two roda A and B of same length and radius are joined together. The thermal conductivity of A and B are 2K and K. Under steady state conditions ,if the temperature difference between the open ends of A and B is 36°C , the temperature difference across `A` is

Suma , 7 Years ago
Grade 12
anser 1 Answers
Shailendra Kumar Sharma

Last Activity: 7 Years ago

Q=\frac{T2-T1}{L/KA+L/2KA} 
Where T2-T1 =36 
Now accross A
Q=\frac{T2-T1}{L/2KA}
Where T2-T1 = TA (say)Q=\frac{TA}{L/2KA}=\frac{36}{L/2KA+L/KA}
Q=\frac{T2-T1}{L/2KA}=\frac{T2-T1}{L/2KA+L/KA}
Q=\frac{TA}{L/2KA}=\frac{36}{3L/2KA}
TA =12 so the Temperature difference will be 12 degree

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