1.

What is the wavelength band for Ultraviolet rays?

A. 1 * 10 <sup>-6</sup> to 3.9 * 10 <sup>-1</sup> micron meter
B. 1 * 10 <sup>-4</sup> to 3.9 * 10 <sup>-1</sup> micron meter
C. 2 * 10 <sup>-3</sup> to 3.9 * 10 <sup>-1</sup> micron meter
D. 1 * 10 <sup>-2</sup> to 3.9 * 10 <sup>-1</sup> micron meter
Answer» E.


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