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From a wave equation: y = 0.5 sin (2π/3.2 (64t − x)), the frequency of the wave is

1. 5 Hz
2. 15 Hz
3. 20 Hz
4. 25 Hz

Correct answer: 20 Hz

Solution

The wave equation is given as y = 0.5 sin(2π/3.2 (64t − x)). The term 64t represents the angular frequency (ω) in the form ω = 2πf. Comparing, ω = 64, so f = ω/2π = 64/2π ≈ 10.2 Hz. However, the question seems to have a mismatch in options. None of the options match this frequency. Please verify the question.

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