Q. A tuning fork vibrates with 2 beats in $0.04$ second. The frequency of the fork is
A) $50\ Hz$
B) $100\ Hz$
C) $80\ Hz$
D) None of these
Explanation
(a) $Beat\ frequency = \frac{Number\ of\ beats}{Time} = \frac{2}{0.04} = 50\ Hz$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.