Distinction between interference and beats - class-XI

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Question 1 of 15

Two sound sources are moving in opposite direction with velocity $v _1$ and $v _2$ $(v _1>v _2)$. Both are moving away from a stationary observer.the frequency of both the source is $900\ Hz$. What is the value of $v _1 - v _2 $ so that the beat frequency observed will be $6\ Hz$ ?

Speed of sound =$300\ ms^{-1}$

Select Your Answer:

$1\ ms^{-1}$

$4\ ms^{-1}$

$3\ ms^{-1}$

$2\ ms^{-1}$

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