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A body of length 1 m having cross-sectio...

A body of length 1 m having cross-sectional area 0.75 `m^(2)` has heat flow through it at the rate of 6000 J/s. the difference between two ends of conductor if `K=200Jm^(-1)K^(-1)` is

A

`20”^(@)C`

B

`40”^(@)C`

C

`80”^(@)C`

D

`100”^(@)C`

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