Heat and Thermal ExpansionHard
Question
A ring consisting of two parts ADB and ACB of same conducting k carries an amount of heat H. The ADB part is now replaced with another metal keeping the temperatures T1 and T2 constant . The carried increase to 2H. What should be the conductivity of the new ADB part ? Give 
= 3
= 3Options
A.
k
kB.2 k
C.
k
kD.3 k
Solution
H = 
and 2H = 
(where R & R’ are thermal resistances.)
⇒ k′ =
(k′ = cond. of ADB wire).
and 2H = (where R & R’ are thermal resistances.)
⇒ k′ =
(k′ = cond. of ADB wire).Create a free account to view solution
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