1.

Which of the following indicates the correct set of frequency employed in measuring process?

A. 7*10<sup>6</sup> to 5*10<sup>8</sup> Hz
B. 7.5*10<sup>6</sup> to 4.5*10<sup>8</sup> Hz
C. 7.5*10<sup>6</sup> to 5.9*10<sup>8</sup> Hz
D. 7.5*10<sup>6</sup> to 5*10<sup>8</sup> Hz
Answer» E.


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