The radiation initially produced in fluorescent tube is
(A) infrared
(B) ultraviolet
(C) microwaves
(D) X-rays
Correct Answer : ultraviolet
Question Asked : SSC Combined Matric Level (Pre) Exam 2002
Explanation : The primary radiation that is initially produced within a fluorescent lamp is analogous to that emitted by a low pressure mercury lamp. Fluorescent lamps produce UV radiation by ionizing low-pressure mercury vapour. A phosphorescent coating of zinc oxide on the inside of the tubes absorbs the UV and converts it to visible light.
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Tags : Physics
