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Two rods A and B are of equal lengths. T...

Two rods `A` and `B` are of equal lengths. Their ends of kept between the same temperature and their area of cross-section are `A_(1)` and `A_(2)` and thermal conductivities `K_(1)` and `K_(2)`. The rate of heat transmission in the two rods will be equal, if

A

`K_(1)A_(2)=K_(2)A_(1)`

B

`K_(1)A_(1)=K_(2)A_(2)`

C

`K_(1)=K_(2)`

D

`K_(1)A_(1)^(2)=K_(2)A_(2)^(2)`

Text Solution

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The correct Answer is:
B
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