Three rods of same dimensions have ...
Question
Fullscreen

Three rods of same dimensions have thermal conductivities 3K, 2K and K. They are arranged as shown, with their ends at 100°C, 50°C and 0°C. The temperature of their junction is 50°C 2K 10000_3K 0°C 1 75°C 75°C

JEE/Engineering Exams
Physics
Solution
120
Rating
4.0 (1 ratings)
Fullscreen
The amount of heat transmitted from one end to other end is ( Q=frac{K A Tleft(t_{1}-t_{2}right)}{d} ) Where ( T ) is the time, ( t_{1}-t_{2}= ) temp. difference At the junction [ begin{array}{l} Q=Q_{1}+Q_{2} Rightarrow frac{3 K(A)(100-t) T}{d} Rightarrow frac{2 K(A)(t-50) T}{d}+frac{K A(t-0) T}{d} end{array} ] Where ( t ) is the temperature of junction [ Rightarrow 6 t=400 Rightarrow t=frac{200}{3}^{0} C ]
Quick and Stepwise Solutions Just click and Send Download App OVER 20 LAKH QUESTIONS ANSWERED Download App for Free