Beats can be used for:
Correct answer: B. Tuning a string instrument
- A. Counting the heart beat
- B. Tuning a string instrument
- C. Measuring frequency of pendulum
- D. None of above
Explanation
Beats are used in tuning musical instruments.
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About Superposition and Interference
Superposition states that overlapping waves produce a resultant displacement equal to the algebraic sum of their individual displacements. Interference covers constructive and destructive interference, phase difference, path difference, coherent sources, and conditions for maxima and minima. It differs from diffraction, which involves spreading around openings or obstacles.
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