Question:
A point on a taut string is moving up and down due to a wave travelling along it. The point completes 120 cycles in one fourth of a minute. The frequency of the wave is:
A point on a taut string is moving up and down due to a wave travelling along it. The point completes 120 cycles in one fourth of a minute. The frequency of the wave is:
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Frequency is the number of oscillations per second: \(f = \frac{N}{t}\), always convert time to seconds.
Updated On: Jun 19, 2026
- 8 Hz
- 120 Hz
- 300 Hz
- 330 Hz
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The Correct Option is A
Solution and Explanation
Step 1: Determine total time.
One fourth of a minute = \(15~\text{s}\).
Step 2: Calculate frequency.
Frequency \(f = \frac{\text{number of cycles}}{\text{time}} = \frac{120}{15} = 8~\text{Hz}\)
Step 3: Conclusion.
The frequency of the wave is 8 Hz.
One fourth of a minute = \(15~\text{s}\).
Step 2: Calculate frequency.
Frequency \(f = \frac{\text{number of cycles}}{\text{time}} = \frac{120}{15} = 8~\text{Hz}\)
Step 3: Conclusion.
The frequency of the wave is 8 Hz.
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