Heat radiations propagate with the speed of

Options

A. `alpha`-rays
B. `beta`-rays
C. light waves
D. sound waves

Answer

To solve the question "Heat radiations propagate with the speed of," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Nature of Heat Radiation**:
- Heat radiation is a form of energy transfer that occurs through electromagnetic waves.

2. **Understand Electromagnetic Waves**:
- Electromagnetic waves include a range of waves such as radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

3. **Speed of Electromagnetic Waves**:
- All electromagnetic waves, regardless of their type, travel at the same speed in a vacuum, which is the speed of light.

4. **Conclusion**:
- Since heat radiation is a type of electromagnetic wave, it also travels at the speed of light.

5. **Select the Correct Option**:
- Based on the understanding that heat radiation travels at the speed of light, we can conclude that the correct option is the one that states "the speed of light."

### Final Answer:
- Heat radiations propagate with the speed of light.