If one cycle lasts 0.5 seconds, what is the frequency?

If one cycle lasts 0.5 seconds, what is the frequency?

• A. 0.5 Hz
• B. 2 Hz
• C. 1 Hz
• D. 0.25 Hz

Answer: (B)

Frequency is how many cycles happen in one second, so it’s the inverse of the period. Use f = 1/T. With a cycle lasting 0.5 seconds, you get 1 / 0.5 = 2 cycles per second. So the frequency is 2 Hz. The other values correspond to longer per-cycle times (0.5 Hz would be 2 seconds per cycle, 1 Hz would be 1 second per cycle, 0.25 Hz would be 4 seconds per cycle).

Frequency is how many cycles happen in one second, so it’s the inverse of the period. Use f = 1/T. With a cycle lasting 0.5 seconds, you get 1 / 0.5 = 2 cycles per second. So the frequency is 2 Hz. The other values correspond to longer per-cycle times (0.5 Hz would be 2 seconds per cycle, 1 Hz would be 1 second per cycle, 0.25 Hz would be 4 seconds per cycle).