Final answer:
The frequency of a tuning fork with a period of 2.50 × 10⁻³ seconds is calculated using the formula Frequency = 1/Period, giving a result of 400 Hz.
Step-by-step explanation:
The frequency of a tuning fork can be determined using the period of one oscillation. The period is the time it takes for one complete cycle of the wave to pass, which is given as 2.50 × 10-3 seconds in the question. To find the frequency, we use the formula: Frequency (f) = 1 / Period (T), Substituting the given period: Frequency (f) = 1 / (2.50 × 10-3 s) = 400 Hz. So, the tuning fork has a frequency of 400 Hz.