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