A wooden spoon is dipped in a cup of ice-cream. Its other end

Question

Accepted Answer

Option 4 is the correct answer: "does not become cold."

Explanation:

1. **Justification for Option 4:**
   - A wooden spoon is an insulator, meaning it does not conduct heat well. When one end of the spoon is dipped in ice cream, the cold temperature does not easily transfer to the other end of the spoon. This is because wood does not allow heat (or cold) to travel through it efficiently. As a result, the other end of the spoon remains at room temperature and does not become cold.

2. **Why Option 1 is incorrect (convection):**
   - Convection is the transfer of heat through a fluid (liquid or gas) by the movement of the fluid itself. Since the spoon is a solid object and not a fluid, convection does not apply in this scenario. Therefore, the other end of the spoon cannot become cold by convection.

3. **Why Option 2 is incorrect (radiation):**
   - Radiation involves the transfer of heat through electromagnetic waves, such as infrared radiation. This process does not require a medium and typically involves heat transfer from a hot object to a cooler one. In this case, there is no significant radiation process occurring between the ice cream and the spoon, especially since wood is not a good emitter or absorber of radiant energy. Thus, the other end of the spoon does not become cold by radiation.

4. **Why Option 3 is incorrect (conduction):**
   - Conduction is the transfer of heat through a material by direct contact. While conduction could theoretically occur in a material that conducts heat well, wood is a poor conductor of heat. This means that the cold temperature from the ice cream does not effectively travel through the wooden spoon to the other end. Therefore, conduction does not cause the other end of the spoon to become cold.

In conclusion, due to the insulating properties of wood, the other end of the wooden spoon does not become cold when one end is dipped in ice cream, supporting Option 4 as the correct answer.