During transfer of heat, if path of heat transfer is straight line, the mode of transmission of heat is………

Explanation

To solve the question regarding the mode of heat transfer when the path of heat transfer is a straight line, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Modes of Heat Transfer**:
- There are three primary modes of heat transfer: conduction, convection, and radiation.

2. **Understand Each Mode**:
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