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Question

A metal rod of length 2m has cross sectional area 2A and as shown in figure. The ends are maintained at temperature 1000C and 700C.$ The tem[temperature at middle point C is

A
900C
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B
300C
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C
450C
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D
600C
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Solution

The correct option is A 900C
LetqbetemperatruremiddlepointCandinseriesrateofheatflowissameK(2A)(100θ)=KA(θ70)2002θ=θ703θ=270θ=900C
Hence,
option (A) is correct answer.

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