Electromagnetic Waves - Result Question 28
28. Green-house effect is the heating up of earth’s atmosphere due to
[2002]
(a) green plants
(b) infra-red rays
(c) $X$-rays
(d) ultraviolet rays
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Answer:
Correct Answer: 28. (b)
Solution:
- (b) Infrared rays is the cause of Green house effect. The glass transmits visible light and short infrared rays which are absorbed by plants. Then it emits long infrared rays, which are reflected back by glass.
