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GK QUESTION#3064

What is the frequency (f) of a wave with a period of 0.04 seconds?

  1. A50 Hz
  2. B25 HzCorrect answer
  3. C40 Hz
  4. D100 Hz
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Answer

B. 25 Hz

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Explanation

Frequency is the reciprocal of period: f = 1/T = 1/0.04 = 25 Hz. A period measures seconds per cycle, whereas frequency measures cycles per second.

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