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Question

Which among the given options has the greatest value?
  1. 1 EHz
  2. 1 ZHz
  3. 1 PHz
  4. 1 THz


Solution

The correct option is B 1 ZHz
Hertz(Hz) is the S.I unit of frequency.

Using prefix conversions,
(Tera), 1 THz=1012 Hz
(Exa), 1 EHz=1018 Hz
(Zetta), 1 ZHz=1021 Hz
(Peta), 1 PHz=1015 Hz

Hence, 1 ZHz is the largest.

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