In the Ingenhausz's methodto comparethe thermalconductivityof differentof different substance , the lengthupto whichwax meltedin copper and zinc rods are 9.3 cm and 5 cm respectively . Compare theirthermalconductivites .

In the Ingenhausz's methodto comparethe thermalconductivityof differen

1.	In the Ingenhausz's methodto comparethe thermalconductivityof differentof different substance , the lengthupto whichwax meltedin copper and zinc rods are 9.3 cm and 5 cm respectively . Compare theirthermalconductivites .
Answer» Solution :GIVEN and `l_(2) = 5CM` `therefore (k_(c))/(k_(z)) = (l_(c)^(2))/(l_(z)^(2)) = ((9.3 cm)/(5cm))^(2) = 3.46` Thus , the thermal conductivityof copperis 3.46 times THATOF ZINC.