Frequency of woods lamp is -

Ans. is 'a' i.e., 360 nm Wood's lampo Wood's lamp has an ultraviolet light lamp (365 nm) with a filter containing nickle oxide and barium silicate. The UV light, when absorbed by certain substances, fluorescences in dark and the color of fluorescence is useful in diagnosis of the condition.ConditionFluorescent coloursTinea capitisErythrasmaVitiligoAlbinismLeprosyTuberous sclerosisPseudomonas infectionPorphyriaTinea versicolorBright yellow greenCoral red or pinkMilky whiteBlue whiteBlue whiteBlue whiteGreenish whitePink/orangeGolden yellow