Answer:
Explanation:
Given
Frequency of source [tex]f=5\ MHz[/tex]
velocity of blood cells moving away [tex]v_l=0.15\ m/s[/tex]
assuming velocity of sound in blood is [tex]v=1540\ m/s[/tex]
Considering Doppler effect to get the apparent frequency
Frequency shift of a moving object is given by
[tex]\Delta f=\pm 2f_s\cdot \frac{v_0}{v}[/tex]
Where [tex]\Delta f=[/tex]shift in frequency
[tex]f_s=[/tex]Frequency of source
[tex]v_0=[/tex]velocity of observer
[tex]v=[/tex]velocity of sound in given media
[tex]\Delta f=\pm 2\cdot 5\cdot \frac{0.15}{1540}[/tex]
[tex]\Delta f=974\ Hz[/tex]
