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A source is moving towards a stationary observer with some velocity.the frequency of sound herd is 4/3of it's original frequency.then velocity of source is? ​

Answer»

The velocity of the SOURCE (v_s) is v / 4 (or) 82.5 m/sGiven:LET the NATURAL Frequency be " f₀ "Apparent Frequency (f_a) = 4 / 3 f₀Let the speed of the sound be " v "Explanation:From the formula we know,Here,f_a Denotes apparent Frequencyf₀ Denotes Natural Frequency.v Denotes Speed of sound.v_s Denotes velocity of source.Now,As the source is moving towards the observer,Then at the denominator there will be NEGATIVE sign.Substituting the values and solving,∴ The velocity of the source (v_s) is v / 4 (or) 82.5 m/s.



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