Question

Which of the following rays coming from the Sun plays an important role in maintaining the Earth’s warmth?

• A. Infrared rays
• B. \( \gamma \) rays
• C. UV rays
• D. Visible light rays

Hint:

Infrared rays, which are emitted by the Sun, are responsible for heating the Earth's surface. These rays have longer wavelengths than visible light and are essential in maintaining the Earth's warmth through the greenhouse effect.

Answer 1

The Correct Option is A

The Sun emits a wide range of electromagnetic radiation, including visible light, ultraviolet (UV) rays, infrared rays, and others. However, infrared rays are the primary radiation that contributes to the Earth's warmth. 
- Infrared rays are absorbed by the Earth and re-radiated as heat, which is responsible for maintaining the Earth's temperature. This is often referred to as the greenhouse effect. 
- While visible light contributes to illumination, and UV rays have other effects such as causing sunburns, it is the infrared radiation that plays a key role in heating the Earth's surface and atmosphere. Thus, the correct answer is option (A), Infrared rays.