STANDARD Physics Beat Frequency MCQ Question
Two vibrating tuning forks produce progressive waves given by Y₁ = 4 sin 500 πt and Y₂ = 2 sin 506 πt. Number of beats produced per minute is:
3
360
180
60
Correct Answer
Detailed Explanation
The beat frequency is the difference in frequencies of the two waves. Here, the frequencies are 250 Hz and 253 Hz, giving a beat frequency of 3 Hz. Therefore, the number of beats per minute is 3 Hz × 60 s = 180 beats.
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