A and B are Two Points On A Uniform Metal Ring Whose Centre Is C. The Angle . A and B are Maintained At Two Different Constant Temperatures. When  the Rate Of Total Heat Flow From  A to B is 1.2 W. When  this Rate Will Be:

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and B are two points on a uniform metal ring whose centre is C. The angle A and are maintained at two different constant temperatures. When  the rate of total heat flow from  A to B is 1.2 W. When  this rate will be:


Correct option is

1.6 W


Let  R = total thermal resistance of the ring


For  two sections of resistance R/2 each are in parallel. So equivalent resistance = R/4.

 Rate of total heat flow 








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