Question

A wave completes 24 cycles in 0.8 s. The frequency of the wave is

• A. 30 Hz
• B. 8 Hz
• C. 24 Hz
• D. 12 Hz

Answer 1

The correct option is A 30 Hz

time period of wave $T=\frac{0.8}{24}sec$

so frequency is $f=\frac{24}{0.8}=30$Hz

so answer is A.