Question

If a vibrator strikes the water $50$ times in $5s$, then the frequency of wave is

• A. $10Hz$
• B. $0.5Hz$
• C. $5Hz$
• D. $0.1Hz$

Answer 1

Answer: (A)

$10Hz$

Total number of vibrations, in $5s$ is $50$.

So, number of vibrations in $1s$ is $\frac{50}{5}=10$

Frequency$=10Hz$, (As frequency is defined as the number of oscillations or vibrations per second)