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In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.170 sec. The frequency of the wave is:

1. 1.47 Hz
2. 2.94 Hz
3. 5.88 Hz
4. 3.53 Hz

Correct answer: 2.94 Hz

Solution

The time required to move from maximum displacement to zero displacement is one-fourth of the time period (T/4). Thus, T = 4 × 0.170 = 0.68 s. The frequency is given by f = 1/T = 1/0.68 ≈ 2.94 Hz.

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