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Thermal Physics

Cool goIITian

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21 Sep 2011 23:28:29 IST

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334

veryyy urgentt!!!

Physics

Five rods of the same dimensions are arranged as shown. They have thermal conductivities k1, k2, k3, k4 and k5. When points A and
B are maintained at different temperatures, no heat flows through the central rod. It follows that :
(a) k1 = k4 and k2 = k3
(b) k1/k4 = k2/k3
(c) k1k4 = k2k3
(d) k1k2 = k3k4

pls rewply fast

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Comments (5)

Vikram Saxena

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22 Sep 2011 01:51:58 IST

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please post the image of the arrangement of the five rods

apoorv

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22 Sep 2011 22:10:17 IST

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apoorv

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Joined: 12 Sep 2011

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22 Sep 2011 22:10:56 IST

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nw pls reply.i hv posted d image!!

avada

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23 Sep 2011 00:28:14 IST

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Arjun Virmani

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26 Sep 2011 12:44:40 IST

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Heat transfer is analogous to current electricity and applying this anology this is a wheatsone bridge which according to your figure implies

implies K1K4 = K2K3 Hence option C is correct

You may also refer to Conceps of Physics by HC Verma Volume 2, Page 92 Question 8

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