1.

Level of vacuum within the gun is in the order of _____

A. 10<sup>-4</sup> to 10<sup>-6</sup> Torr
B. 10<sup>-1</sup> to 10<sup>-3</sup> Torr
C. 10<sup>-.0.65</sup> to 10<sup>-1</sup> Torr
D. 1 to 2 Torr
Answer» B. 10<sup>-1</sup> to 10<sup>-3</sup> Torr


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