STANDARDPhysics-Electromagnetic Waves
STANDARD Physics Greenhouse Effect MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Which of the following electromagnetic wave play an important role in maintaining the earth’s warmth or average temperature through the greenhouse effect?
A
Visible rays
B
Infrared waves
C
Gamma rays
D
Ultraviolet rays
Correct Answer
Option B
Detailed Explanation
Infrared radiation plays an important role in maintaining the earth's warmth through the greenhouse effect. Incoming visible light when passes relatively easily through the atmosphere is absorbed by the earth's surface and radiated as infrared (longer wavelength) radiation. This radiation is trapped by greenhouse gases such as carbon dioxide and water vapour: In this way an average temperature is maintained.
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