A tuning fork vibrating with a sonometer having 20 cm wire produces 5 beats per second. The beat
Channel: Doubtnut
Date: 19/01/2020

A tuning fork vibrating with a sonometer having 20 cm wire produces 5 beats per second. The beat frequency does not change if the length of the wire is changed to 21 cm. The frequency of the tuning fork (in Hertz) must be