Laws of MotionHard
Question
A tuning fork of known frequency 256 Hz makes 5 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension was
Options
A.(256 + 2) Hz
B.(256 - 2) Hz
C.(256 - 5) Hz
D.(256 + 5) Hz
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