An iron disc at `50^(@)`C is put in vessel full of water at `50^(@)`C. The heat will

Options

A. flow from iron disc to water
B. flow from water to iron disc
C. not flow from iron disc to water or vice versa
D. None of these

Explanation

To solve the question, we need to analyze the situation involving the iron disc and the water.

### Step-by-Step Solution:

1. **Identify the Initial Conditions**:
- The iron disc is at a temperature of 50°C.
- The water in the vessel is also at a temperature of 50°C.

2. **Understand Heat Transfer**:
- Heat transfer occurs from a body at a higher temperature to a body at a lower temperature. This is based on the principle of thermodynamics.

3. **Compare the Temperatures**:
- Since both the iron disc and the water are at the same temperature (50°C), there is no temperature difference between them.

4. **Determine Heat Flow**:
- Because the temperatures are equal, there is no driving force for heat transfer. Heat will not flow from the iron disc to the water, nor from the water to the iron disc.

5. **Conclude the Result**:
- Therefore, the heat will not flow in either direction. The correct answer is that heat will not flow from the iron disc to the water or vice versa.

### Final Answer:
The heat will not flow from the iron disc to the water or vice versa.

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