A tuning fork of unknown frequency produces 6 beats per second with a standard 256 Hz fork

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

A tuning fork of unknown frequency produces 6 beats per second with a standard 256 Hz fork. When the unknown fork is slightly loaded with a small piece of wax, the beat frequency decreases to 4 beats per second. Calculate the original frequency of the unknown fork. (a) 260 Hz (b) 262 Hz (c) 250 Hz (d) 252 Hz

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