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1. |
What is the wavelength band for Ultraviolet rays? |
A. | 1 * 10¯⁶ to 3.9 * 10¯¹ micron meter |
B. | 1 * 10¯⁴ to 3.9 * 10¯¹ micron meter |
C. | 2 * 10¯³ to 3.9 * 10¯¹ micron meter |
D. | 1 * 10¯² to 3.9 * 10¯¹ micron meter |
Answer» E. | |