Two tuning forks when sounded together produce 30 beats in 10 s

PHYSICS · Single correct · CBSE · Physics · Waves · Waves

Problem

Two tuning forks when sounded together produce 30 beats in 10 s. If one fork has a frequency of 320 Hz, the frequency (or frequencies) of the other fork can be (a) 330 Hz330\,\text{Hz} or 310 Hz310\,\text{Hz} (b) 323 Hz323\,\text{Hz} or 317 Hz317\,\text{Hz} (c) 350 Hz350\,\text{Hz} or 290 Hz290\,\text{Hz} (d) 326 Hz326\,\text{Hz} or 314 Hz314\,\text{Hz}

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