The thermal radiation from a hot body travels with a velocity of

Options

A. `330 m s^(-1)`
B. `2 xx 10^(8) m s^(-1)`
C. `1200 m s^(-1)`
D. `3 xx 10^(8) m s^(-1)`

Explanation

To determine the velocity of thermal radiation emitted from a hot body, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Thermal Radiation**:
- Thermal radiation is emitted by a hot body in the form of electromagnetic waves. The velocity of these waves is a key aspect of the problem.

2. **Identify the Nature of the Waves**:
- All thermal radiation can be classified as electromagnetic radiation. This includes a range of wavelengths depending on the temperature of the body.

3. **Velocity of Electromagnetic Waves**:
- In a vacuum, all electromagnetic waves travel at the same speed, which is approximately \(3 \times 10^8\) meters per second.

4. **Conclusion**:
- Since thermal radiation is a type of electromagnetic radiation, we conclude that the velocity of thermal radiation from a hot body is \(3 \times 10^8\) meters per second.

5. **Select the Correct Option**:
- Among the given options:
- a) 330 m/s
- b) \(2 \times 10^8\) m/s
- c) 1200 m/s
- d) \(3 \times 10^8\) m/s
- The correct answer is option d) \(3 \times 10^8\) m/s.

### Final Answer:
The thermal radiation from a hot body travels with a velocity of \(3 \times 10^8\) meters per second.

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