Concept:Frequency and time period are fundamental, inversely related temporal properties of any oscillation or wave.
Solution:- Time period (\( T \)) is the total amount of time (in seconds) it takes to complete one full wave cycle.
- Frequency (\( f \)) is the total number of wave cycles completed in exactly one second (Hertz).
- Because they describe the exact same cyclic event from opposite perspectives, they are mathematical reciprocals of one another.
- Therefore, the strictly correct relationship is \( f = 1/T \).
Why other options are incorrect:Option A is dimensionally invalid (Time = Velocity / Frequency -> \( s = (m/s) / s^{-1} = m \)). Options B and D are nonsensical algebraic jumbles.
( '1/f = 1/T' was logically restored to 'f = 1/T' for physical accuracy).
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