1.

Coefficient of thermal conductivity K is given by :

Answer»

`(Q.t)/(A(T_(1)-T_(2))d)`
`(Q.d)/(A(T_(1)-T_(2))t)`
`(A(T_(1)-T_(2))d)/(Q.t)`
`(A(T_(1)-T_(2))t)/(Q.d)`

Solution :`Q("k A(T_(1)-T_(2))t)/(d)rArrk=(QD)/(A(T_(1)-T_(2))t)`
Thus CORRECT CHOICE is (B).


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