The altitude of the ozone layer in the atmosphere and the ‘type’ of the electromagnetic waves emitted by the sun being absorbed by it are respectively:

Options

A. 80 km, infrared rays
B. 40 km, infrared rays
C. 90 km, ultraviolet rays
D. 50 km, ultraviolet rays

Answer

To solve the question regarding the altitude of the ozone layer and the type of electromagnetic waves absorbed by it, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Atmosphere Layers**:
- The Earth's atmosphere consists of several layers. The first layer above the Earth's surface is called the **troposphere**. Above the troposphere lies the **stratosphere**.

2. **Identifying the Ozone Layer**:
- The ozone layer is located within the stratosphere. It plays a crucial role in absorbing certain types of electromagnetic radiation emitted by the Sun.

3. **Determining the Altitude of the Ozone Layer**:
- The altitude of the ozone layer is generally accepted to be around **50 kilometers** above the Earth's surface.

4. **Identifying the Type of Electromagnetic Waves Absorbed**:
- The ozone layer primarily absorbs **ultraviolet (UV) rays** from the Sun. These UV rays are harmful to living organisms, and the ozone layer protects the Earth by filtering them out.

5. **Final Answer**:
- Therefore, the altitude of the ozone layer in the atmosphere and the type of electromagnetic waves emitted by the Sun being absorbed by it are **50 kilometers and ultraviolet rays**, respectively.

### Conclusion:
The correct option is **50 kilometers and ultraviolet rays**.

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