An ultrasound wave of intensity I0 I_0\,I0 is incident on a boundary between two media. The amplitude of the reflected wave is 35\displaystyle \frac{3}{5}53 of the amplitude of the incident wave. What is the intensity of the reflected wave in terms of I0I_0I0?
325I0\frac{3}{25} I_0253I0
35I0\frac{3}{5} I_053I0
925I0\frac{9}{25} I_0259I0
35I0\sqrt{\frac{3}{5}} I_053I0