An equivalent rod is made by joining two rod of same length. If their coefficient of thermal conductivity are K1 and K2, then thermal conductivity of equivalent rod is:
A. K1+K2
B. K1– K2
C. 2K1 K2/ (k1+ K2)
D. (K1 – K2)/(k1+ K2).
Answer:C
An equivalent rod is made by joining two rod of same length. If their coefficient of thermal conductivity are K1 and K2, then thermal conductivity of equivalent rod is:
A. K1+K2 B. K1– K2 C. 2K1 K2/ (k1+ K2) D. (K1 – K2)/(k1+ K2).