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Two rods of the same length and material...

Two rods of the same length and material transfer a given amount of heat in 12 seconds when they are joined end to end. But when they are joined lengthwise, they will transfer the same amount of heat, in the same conduction, in :

A

24 s

B

3 s

C

48 s

D

1.5 s

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The correct Answer is:
B
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