Heat and Thermal ExpansionHard

Question

Three rods of the same dimensions have thermal conductivities 3k, 2k and k. They are arranged as shown, with their ends at 100oC, 50oC and 0oC. The temperature of their junction is :-

Options

A.75oC
B. oC
C.40oC
D. oC

Solution

Let θ = junction temperature
Net heat current at junction  is zero
3k (100 - θ) + k (0 - θ) + 2k (50 - θ) = 0 ⇒ oC

Create a free account to view solution

View Solution Free
Topic: Heat and Thermal Expansion·Practice all Heat and Thermal Expansion questions

More Heat and Thermal Expansion Questions

The temperature of a body rises by 44oC when a certain of heat is given t it. The same heat when supplied to 22 g of ice...A glass rod measured with a zinc scale, both being at 30oC appears to be of length 100cm. If the scale shows correct rea...The internal energy of a system remains constant when it undergoes : -...When two samples at different temperature are mixed, the temperature of the mixture can be : -...Two long, thin solid cylinders are evidential in size, but they are of different substances with two different thermal c...