This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Wood lamp wavelength - 
Select and explain. 
A. 360-385, B. 280-320, C. 400450, D. 450-500
A: 360-385
Answer: A: 360-385 
Explanation: Ans is 'a' i.e., 360-385 Wood lampo This is a source of ultraviolet light (320-400nm) from which virtually all visible rays have been excluded by a Wood's (nickel oxide) filter,o Primarily emits 360nm.o UV light, when absorbed by certain substances, fluorescences in dark and color produced, is useful in the diagnosis of the certain conditions.ConditionFluorescence colorTinea capitisBright yellow-greenErythrasmaCoral red or pinkVitiligoMilky whiteAlbinismBlue whiteLeprosyBlue whiteTuberous sclerosisBlue whitePseudomonas infectionGreenish whitePorphyriaPm k/o rangeTinea VersicolorGolden yellow-