Answer :
Answer:
Explanation:
Given
Velocity of bat [tex]v_o=7\ m/s[/tex]
Frequency of sound [tex]f=50\ kHz[/tex]
velocity of sound [tex]v=340\ m/s[/tex]
using Doppler Effect apparent frequency is given by
[tex]f'=f\cdot \frac{v-v_o}{v+v_s}[/tex]
where
[tex]f'=[/tex]apparent frequency
v=velocity of sound in the given media
[tex]v_s=[/tex]velocity of source
[tex]v_o=[/tex]velocity of observer
here velocity of source is zero
as source is travelling towards source thus
[tex]f'=50\cdot (\frac{340+7}{340})[/tex]
[tex]f'=51.029\ Hz[/tex]