two sound waves have frequencies of 12Hz and 10Hz. Calculate their beats period
-
0.5s
- 1.0s
- 1.2s
- 2.0s
The correct answer is: A
Explanation
\(f_1 - f_2 = \frac{1}{T}\)12 - 10 = \(\frac{1}{2}\)
= 0.5