Questions
Two rods A and B of different materials are welded together as shown in figure. Their thermal conductivities are K1 and K2. The thermal conductivity of the composite rod will be
a
3K1+K22
b
K1+K2
c
2(K1+K2)
d
K1+K22
detailed solution
Correct option is D
In parallel 1Req=1R1+1R2 Keq(2A)l=K1Al+K2Al Keq=K1+K22Talk to our academic expert!
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