A tuning fork of unknown frequency produces beats per second with a fork

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

Problem

A tuning fork of unknown frequency produces

6

beats per second with a

256\,\text{Hz}

fork. After a small piece of wax is added to the unknown fork, its frequency decreases and the beat frequency becomes

10

beats per second. The original frequency of the unknown fork was (a)

262\,\text{Hz}

(b)

246\,\text{Hz}

(c)

250\,\text{Hz}

(d)

260\,\text{Hz}