Question

On sounding tuning fork $A$ with another tuning fork $B$ of frequency $384Hz,6$ beats are produced per second. After loading the prongs of $A$ with wax and then sounding it again with $B,4$ Beats are produced per second what is the frequency of the tuning fork $A$.

• A. $388Hz$
• B. $80Hz$
• C. $378Hz$
• D. $390Hz$

Answer 1

The correct option is D $390Hz$