In order to increase heat transfer between two metals, which action is likely incorrect?

Choosing a material with a lower specific heat is an effective way to increase heat transfer between two metals. Specific heat refers to the amount of heat required to change the temperature of a substance. When materials with lower specific heat values are used, they can absorb heat more quickly, thereby facilitating greater heat transfer between the two metals. This is because less energy is required to increase the temperature of a material with a lower specific heat, allowing it to react more rapidly to temperature differences.

The other options indicate actions that would not enhance heat transfer effectively. Decreasing the size of the metal would impact the surface area available for heat transfer, potentially reducing effective contact. Decreasing the time of contact might lead to less heat exchange, as there would not be enough time for heat to flow between the two materials. Choosing a material with the same temperature as the iron would eliminate the temperature gradient necessary for heat transfer to occur, effectively stopping any heat exchange.

In conclusion, selecting a material with a lower specific heat is advantageous for enhancing heat transfer between metals, making this option the correct choice in the context of the question.