Two rods having thermal conductivity in the ratio of 5:3 having equal – McqOptions

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1.	Two rods having thermal conductivity in the ratio of 5:3 having equal lengths and equal cross-sectional area are joined end to end. If the temperature of the free end of the first rod is 100°C and free end of the second rod is 20°C, then the temperature of the junction is?
A.	50°C
B.	70°C
C.	60°C
D.	90°C
Answer» C. 60°C

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