Two tuning forks of frequencies 256 Hz and 260 Hz are sounded together

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

Two tuning forks of frequencies 256 Hz and 260 Hz are sounded together, producing audible beats. If both frequencies are increased by exactly 5 Hz, what happens to the beat frequency? (a) 10 Hz10\,\text{Hz} (b) 5 Hz5\,\text{Hz} (c) It remains the same at 4 Hz4\,\text{Hz} (d) 2 Hz2\,\text{Hz}

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