(a): When ever there is a relative motion between a source of sound and a listener, frequencyof the note of sound apparently changes; explain this statement.
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shbana azami ko milegi aitihasik hai beta ek bar ke anant hai ❤️❤️❤️ band kar diya tha ki vah apani man ke liye vacancy in English hai to vah apane pati ki mrityu ho gai hai ki is bar hai aur
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