Power In Wave
Power transmitted by a sinusoidal wave on a string increases with?
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About This Question
- Subject
- physics
- Chapter
- oscillations and waves
- Topic
- power in wave
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Amplitude squared and frequency squared
- Average Power Formula: For a string of linear density μ and wave speed v, the average power is P=21μω2A2v.
- Variables Check:
- ω=2πf (angular frequency)
- A = amplitude
- Proportionality: Sustituting ω gives P∝A2f2.
- Conclusion: Power is directly proportional to the Square of the amplitude and the Square of the frequency.
- Impact: Increasing both A and f by a factor of 2 leads to a 16-fold increase in power transmitted.
This hard difficulty physics question is from the chapter oscillations and waves, covering the topic of power in wave. It appeared in the 2025 exam.
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