Question

4. What is the best estimate of the frequency of the wave shown below?


O A. 0.40 Hz

OB. 0.85 Hz

O C. 1.25 Hz

O D. 2.50 Hz

Answer 1

Answer:

The answer is "Option D"

Explanation:

Please find the graph file in the attached file.

Using formula:

$\to v= \rho \lambda \\\\\ \to \lambda= 130 \cm \\\\ \to v= 335 \frac{cm}{s}\\\\ \to \rho= \frac{v}{\lambda}$

      $=\frac{335}{130} \\\\ = 2.57 \approx 2.50 \ Hz$