Two tuning forks of frequencies 6Hz and 4Hz respectively are sounded together. The beat frequency is
A
2Hz
B
5Hz
C
8Hz
D
10Hz
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Beat frequency = f\(_1\) - f\(_2\)
f\(_1\) = 6Hz
f\(_2\) = 4Hz
Beat frequency = f\(_1\) - f\(_2\) = 6 - 4 = 2Hz
Source: WAEC / JAMB / NECO Classroom Archive (Record #70490)