Question # Four rods of same material and having the same cross section and length have been joined, as shown. The temperature of the junction of four rods will be

# Four rods of same material and having the same cross section and length have been joined, as shown. The temperature of the junction of four rods will be

(1) ( 20^{circ} mathrm{C} )

(2) ( 30^{circ} mathrm{C} )

(3) ( 45^{circ} mathrm{C} )

(4) ( 60^{circ} mathrm{C} )

Solution

( frac{theta-0}{k}+frac{theta-30}{k}+frac{theta-60}{k}+frac{8-90}{k}=0 )

( 4 theta-180=0 )

( theta=45^{circ} mathrm{c} )