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Q: What is the frequency of the wave if the time interval of the vibrating object is 0.04 seconds?
  • A. 250 Hz
  • B. 25 Hz
  • C. 20 Hz
  • D. 200 Hz
Correct Answer: Option B - Time period (T) = 0.04 second Frequency (f) = ? Frequency (f) = 1/T T = 1/0.04 = 100/4 = 25 Hz
B. Time period (T) = 0.04 second Frequency (f) = ? Frequency (f) = 1/T T = 1/0.04 = 100/4 = 25 Hz

Explanations:

Time period (T) = 0.04 second Frequency (f) = ? Frequency (f) = 1/T T = 1/0.04 = 100/4 = 25 Hz