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

The correct answer is option 2.

Key Points

• The frequency (f) of a wave is the reciprocal of its period (T).
• The formula to calculate frequency is f = 1/T.
• Given the period T = 0.04 seconds, applying the formula gives f = 1/0.04.
• Therefore, the frequency of the wave is f = 25 Hz.

Additional Information

• Frequency (f):
  • Frequency is the number of complete wave cycles that pass a point per unit of time, typically measured in Hertz (Hz).
  • 1 Hz is equal to one cycle per second.
• Period (T):
  • The period is the time taken for one complete cycle of the wave to pass a given point.
  • It is usually measured in seconds (s).
• Relationship between Period and Frequency:
  • The period is the inverse of the frequency: T = 1/f.
  • Similarly, frequency is the inverse of the period: f = 1/T.
• Wave Cycles:
  • A wave cycle consists of one complete wave oscillation, typically measured from crest to crest or trough to trough.