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1. |
What is the wavelength band of gamma rays? |
A. | 1 * 10<sup> -7</sup> to 4 * 10<sup> -4</sup> micron meter |
B. | 2 * 10<sup> -7</sup> to 2.4 * 10<sup> -4</sup> micron meter |
C. | 3 * 10<sup> -7</sup> to 3.4 * 10<sup> -4</sup> micron meter |
D. | 4 * 10<sup> -7</sup> to 1.4 * 10<sup> -4</sup> micron meter |
Answer» E. | |