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All the rods have same conductance K and same Area of cross-section A. If ends A and C are maintained at temp 2T and T respectively. then find which of the following correct: A)rate of heat flow through ABC AOC and ADC is same B)rate of heat flow through BO and OD is same C)Total rate of heat flow from A to C is 3KAT/2a D) temp at junction B O and D are same

All the rods have same conductance K and same Area of cross-section A. If ends A and C are maintained at temp 2T and T respectively. then find which of the following correct:
 
A)rate of heat flow through ABC AOC and ADC is same
 
B)rate of heat flow through BO and OD is same
 
C)Total rate of heat flow from A to C is 3KAT/2a
 
D) temp at junction B O and D are same
 

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Grade:12

2 Answers

Rajat
213 Points
3 years ago
Option B is correct as BO and OD are symmetrical with respect to AC. Thus rate of heat flow thorough BO and OD is equal.
Please upvote.
Khimraj
3007 Points
3 years ago
By symmetry 
IAB=IBC&IAD=IDC 
∴ no current in BO and OD 
∴TB=TO=TD
...................................................................................

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