Which radiation is used in greenhouse effect?
Correct answer: B. IR
- A. UV
- B. IR
- C. X-rays
- D. Gamma-rays
Explanation
The UV light from Sun is converted to IR as it interacts with the Earth's surface and this IR is then trapped by green house gases such as carbon dioxide and methane which causes a temperature rise leading to the greenhouse effect. Hence IR is primarily responsible for the greenhouse effect.
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About Electromagnetic Waves
Electromagnetic waves consist of mutually perpendicular, oscillating electric and magnetic fields that also remain perpendicular to the direction of propagation. They travel through vacuum at the speed of light and include radio waves, microwaves, infrared, visible, ultraviolet, X-rays and gamma rays. Unlike mechanical waves, they do not require a material medium.
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