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What does not change when sound enters from one medium to another?

What does not change when sound enters from one medium to another?

جب آواز ایک میڈیم سے دوسرے میڈیم میں داخل ہوتی ہے تو کیا تبدیل نہیں ہوتا؟
Explanation
  • When sound travels from one medium to another, speed and wavelength change due to the change in the medium's properties.
  • Frequency remains constant because it is determined by the source of the sound, not the medium.