A) ultraviolet radiation
B) long wave infra red radiation
C) visible light radiation
D) \[X\text{-}\]rays radiation
E) \[\gamma \text{-}\]rays radiation
Correct Answer: B
Solution :
Green-house gases are those gases, which are transparent to solar radiations but retain radiations ie, infra-red radiations. The various green-house gases are\[C{{O}_{2}},\]\[C{{H}_{4}},\] Chloro-fluorocarbons or CFCs and \[{{N}_{2}}O,\,{{O}_{3}}\]and water vapours are of minor significance. Green-house gases are radiatively active gases, which prevents- a substantial part of long wave radiatons emitted by earth to escape into space and radiates them back into the earth causing the Green-house effect. It results in increasing the mean global temperature called as global warming.
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