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Five rods of same dimensions are arrange...

Five rods of same dimensions are arranged as shown in the figure. They have thermal conductivities `K _(1) , K_(2) , K _(3) , K_( 4)` and `K_( 5)` . When points A and B are maintained at different temperatures, no heat flows through the central rod if

A

`K_(1)=K_(4)` and `K_(2)=K_(3)`

B

`K_(1)K_(4) = K_(2)K_(3)`

C

`K_(1)K_(2) = K_(3)K_(4)`

D

`(K_(1))/(K_(4))=(K_(2))/(K_(3))`

Text Solution

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The correct Answer is:
B
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