Two identical conducting rods are first connected independently to two vessels, one containing water at `100^(@)C` and the other containinf ice at `0^(@)C` . In the second case, the rods are joined end to end and connected to the same vessels. Let `q_(1) and q_(2) gs^(-1)` be the rate of melting of ice in two cases respectively. the ratio of `(q_(1))/(q_(2))` is

Answer

4

Explanation

`(" Tem perature difference")/("them alresistance")=L((dm)/(dt))`
`(dm)/(dt)prop(1)/("Them alresistance"),qprop(1)/(R)`
The rods are in parallel in the first case and they are in series in the seconds case. `(q_(1))/(q_(2))=(2R)/((R//2))=4`