A metal cooking pot has a base area of \(0.2 \mathrm{~m}^2\) and thickness \(2.0 \mathrm{~cm}\). It boils water at a rate of \(3.0 \mathrm{~kg} / \mathrm{min}\) when placed on a hot plate. The temperature of the part of the lot plate in contact with the pot is approximately [Thermal conductivity of metal is \(120 \mathrm{Js}^{-1} \mathrm{~m}^{-1} \mathrm{~K}^{-1}\), heat of vaporisation of water is \(2 \times 10^6 \mathrm{~J} / \mathrm{kg}\) ]

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.