Respuesta :
When the source and observer are both moving towards each other, receive frequency will be same.
What is Doppler effect?
The change in frequency of a wave in proportion to an observer who is moving relative to the wave source is known as the Doppler effect, Doppler shift, or simply Doppler, depending on the context. It bears the name of the Austrian scientist Christian Doppler, who first characterized it in 1842.
The Doppler effect, also known as the Doppler shift, is a term used to explain changes in frequency caused by moving sources of sound or light with regard to an observer. As the source gets closer to the observer, the waves it is emitting become compressed and have a greater frequency.
Observer and source moving in same direction, then the frequency becomes:
f = (v ± v₀) × f/ [v ± v(s)]
Now, assume observer is behind the source ,source is moving towards observer and observer is moving away from source:
f₁ = (v - v₀) × f/[v - v(s)]
Here, received frequency will be same, thus Doppler effect occur due to relative motion.
Yes , the perceived frequency will be same as the source frequency.
To know more about frequency refer to:
https://brainly.com/question/254161
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