Which of the following represents ultraviolet light of wavelengths whi – McqOptions

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1.	Which of the following represents ultraviolet light of wavelengths which are potentially injurious (1 = 10-10m)
A.	2000 to 3200
B.	3200 to 4000
C.	4000 to 4600
D.	4600 to 5200
Answer» B. 3200 to 4000

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