Heat flows radially outward through a spherical shell of outside radius R_(2) and inner radius R_(1). The temperature of inner surface of shell is theta_(1) and that of outer is theta_(2). At what radial distance from centre of shell the temperature is just half way between theta_(1) and theta_(2)

Heat flows radially outward through a spherical shell of outside radiu

1.	Heat flows radially outward through a spherical shell of outside radius R_(2) and inner radius R_(1). The temperature of inner surface of shell is theta_(1) and that of outer is theta_(2). At what radial distance from centre of shell the temperature is just half way between theta_(1) and theta_(2)
Answer» `(3R_(1)+R_(2))/(2)` `(4R_(2)+3R_(1))/(3)` `(8R_(2)R_(1))/(4R_(1)+3R_(2))` `(2R_(1)R_(2))/(R_(1)+R_(2))` Answer :D