1.

What is the wavelength band for cosmic rays?

A. Up to 45 * 10<sup> -7 </sup>micron meter
B. Up to 23 * 10<sup> -7 </sup>micron meter
C. Up to 19 * 10<sup> -7 </sup>micron meter
D. Up to 4 * 10<sup> -7 </sup>micron meter
Answer» E.


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