A heat conducting rod consists of an aluminum section 0.20 m long and a copper section 0.70 M long both sections have a cross-sectional area of 4 X 10 -4 m2 The aluminum end of the rod is maintained at a temperature of 30 Celsius while the copper and is maintained at 230 Celsius what is the temperature at the point where the aluminum and copper sections meet the thermoconductivity of aluminum is 205W/M k. copper is a 385W/M.K.
A.74°c
B.86°c
C.100°c
D.80°c
E.93°c