In thermosphere the temperature

Options

A. Rises with height to `200^(@)C`
B. Rises with height to `1500^(@)C`
C. First decreases then rises
D. Decreases to `-150^(@)C`.

Answer

**Step-by-Step Solution:**

1. **Understanding the Thermosphere:**
- The thermosphere is a layer of the Earth's atmosphere located above the mesosphere and below the exosphere. It starts at an altitude of approximately 80 to 120 kilometers above the Earth's surface.

2. **Temperature Characteristics:**
- In the thermosphere, temperatures can rise significantly with altitude. This layer is known for experiencing very high temperatures due to the absorption of solar radiation, including ultraviolet (UV) rays, gamma rays, and X-rays.

3. **Temperature Range:**
- The temperature in the thermosphere can reach up to 2000 degrees Celsius or even higher. However, measuring this temperature is challenging because the air density is extremely low at these altitudes, making it difficult to obtain accurate readings.

4. **Evaluating the Options:**
- The question provides four options regarding the temperature behavior in the thermosphere:
- **Option 1:** Rises with height to 200 degrees Celsius (Incorrect)
- **Option 2:** Rises with height to 1500 degrees Celsius (Correct)
- **Option 3:** First decreases then rises (Incorrect)
- **Option 4:** Decreases to minus 150 degrees Celsius (Incorrect)

5. **Conclusion:**
- The correct answer is that the temperature in the thermosphere rises with height to 1500 degrees Celsius, making option 2 the correct choice.

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