A man sitting on a swing which is moving to an angle of 60^(@) from the vertical is blowing a whistle which has frequency of 2.0 KHZ. The whistle is 2.0 m from the fixed support point of the swing. A sound detector which detects the whistle sound is kept in front of the swing. The maximum frequency the sound detector detected is :

A man sitting on a swing which is moving to an angle of 60^(@) from th

1.	A man sitting on a swing which is moving to an angle of 60^(@) from the vertical is blowing a whistle which has frequency of 2.0 KHZ. The whistle is 2.0 m from the fixed support point of the swing. A sound detector which detects the whistle sound is kept in front of the swing. The maximum frequency the sound detector detected is :
Answer» `2.027 kHz` `1.974 kHz` `9.74kHz` `1.011kHz` Solution :FREQUENCY `V= 2 kHz` Velocity of whistle (SOURCE) `v_(s)=2m` Velocity of sound `v=332m/s` Maximum frequency `v_("max")=((V+V_(s))/(V))v` `=((332+2)/(332))xx2` `=((334)/(332)xx2` `1.006xx2` `2.012 kHz`