Physics - Sound Wave Question with Solution | TestHub

 ${\mathrm{x}}_1=12 \sin (484\mathrm{\pi t}-7\mathrm{\pi x})$ and ${\mathrm{x}}_2=12 \sin (480\mathrm{\pi t}-7\mathrm{\pi x})$ represent the equation of two sound waves and $\mathrm{x}$ and $\mathrm{t}$ are in metre and second. Beat frequency (in $\mathrm{Hz}$)  produced by these two waves is