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Tworods of sane length and material tran...

Tworods of sane length and material transfer a given amount of heat in 12s, when they are joined end to end. But when they are joined lengthwise, then they will transfer same heat in same conditions in

A

24 s

B

3 s

C

1.5 s

D

48 s

Text Solution

Verified by Experts

The correct Answer is:
B
`H_(1)=(KADeltaT)/(2l),H_(2)=(2KADeltaT)/(l),(H_(1))/(H_(2))=(1)/(4)`
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