With what velocity should the source emitting a note of a certain frequency approach a stationary observer so that the apparent frequency of the note for the observer is double the frequency?
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With what velocity should the source emitting a note of a certain frequency approach a stationary observer so that the apparent frequency of the note for the observer is double the frequency?
Only Answer are welcome no spamming please!!
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Solution ⤵️
Using, f′=(v+vfv+0)f ,we get
2f=(v+vlv)fi.e.2v=v+vli.e.v=vL