Beats frequency = |f₁ - f₂|. For 256 Hz and 260 Hz, beats per second:

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Beat frequency = |260 - 256| = 4 Hz ⇒ 4 beats/second. Interference of close frequencies causes amplitude modulation. Memory aid: 'Beats = frequency difference; used in tuning instruments'. Wave interference calculation frequently tested in competitive exams.

Beats frequency = |f₁ - f₂|. For 256 Hz and 260 Hz, beats per second: MCQ with Answer and Explanation

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