Three rods made of the same material and havi | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Let the temperature of the junction be $	heta$.Since the rods are made of the same material and have the same length and cross-section,they have

Vedclass · Accepted Answer

$60$

Vedclass · Answer

(B) Let the temperature of the junction be $	heta$.Since the rods are made of the same material and have the same length and cross-section,they have the same thermal resistance $R$.According to the principle of conservation of energy (steady state),the heat flowing into the junction must equal the heat flowing out of the junction.Let the heat flow from the $90^{\circ}C$ ends towards the junction and then towards the $0^{\circ}C$ end.$Q_{in} = Q_{out}$$\frac{90 - 	heta}{R} + \frac{90 - 	heta}{R} = \frac{	heta - 0}{R}$$2(90 - 	heta) = 	heta$$180 - 2	heta = 	heta$$3	heta = 180$$	heta = 60^{\circ}C$.

Three rods made of the same material and having the same cross-section are joined as shown in the figure. Each rod is of the same length. The left and right ends are kept at $0^{\circ}C$ and $90^{\circ}C$ respectively. The temperature of the junction of the three rods will be ...... $^{\circ}C$.

Similar Questions

Who divided the $Angiosperms$ into two classes?

The shortest distance between the line $y-x=1$ and the curve $x=y^2$ is

The calculated magnetic moment (in Bohr magnetons) of $Cu^{2+}$ ion is

The area (in square units) of the region enclosed by the two circles $x^2+y^2=1$ and $(x-1)^2+y^2=1$ is

Which one of the following is true for an exothermic reaction $A \rightleftharpoons B$,if $E_f$ and $E_b$ are the activation energies of forward and backward reactions respectively?

Vedclass Test Series

Exam Paper Generator

Online Exam Module