A source of sound 
emitting waves of frequency 100 Hz and an observer 
are located at some distance from each other. The source is moving with a speed of19.4 
at an angle of 
with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air 330 
), is
Text Solution
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Here,
Frequency of source, 
Hz Velocity of source, 
Velocity of sound in air, 
As the velocity of source along the source observer line is 
and the observer is at rest, so the apparent frequency observed by the observer is
Hz
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