354719 A source of sound is moving with a velocity of \(50\;m{s^{ - 1}}\) towards a stationary observer. The observer measures the frequency of sound as \(500\;Hz\). The apparent frequency of sound as heard by the observer when source is moving away from him with the same speed is (Speed of sound at room temperature \(350\;m{s^{ - 1}}\)

354720 A vehicle, with a horn of frequency \(n\) is moving with a velocity of \(30\;m{\rm{/}}s\) in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency \(\left(n+n_{1}\right)\). If the velocity of sound in air is \(300\;m{\rm{/}}s\), then

354721 A person \(P\) is \(600\;m\) away from the station when train is approaching station with \(72\;km{\rm{/}}h\), it blows a whistle of frequency \(800\;Hz\) when \(800\;m\) away from the station. Find the frequency heard by the person. Speed of sound \( = 340\;m{s^{ - 1}}\)

354722 A train is passing by a platform at a constant speed of \(40\;m/s\). The train horn is sounded at a frequency of \(378\;Hz.\) Find the overall change in frequency as detected by a person standing on the paltform, as the train moves from approaching to receding. (Take velocity of sound in air as \(320\;m/s\) )

354719 A source of sound is moving with a velocity of \(50\;m{s^{ - 1}}\) towards a stationary observer. The observer measures the frequency of sound as \(500\;Hz\). The apparent frequency of sound as heard by the observer when source is moving away from him with the same speed is (Speed of sound at room temperature \(350\;m{s^{ - 1}}\)

354720 A vehicle, with a horn of frequency \(n\) is moving with a velocity of \(30\;m{\rm{/}}s\) in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency \(\left(n+n_{1}\right)\). If the velocity of sound in air is \(300\;m{\rm{/}}s\), then

354721 A person \(P\) is \(600\;m\) away from the station when train is approaching station with \(72\;km{\rm{/}}h\), it blows a whistle of frequency \(800\;Hz\) when \(800\;m\) away from the station. Find the frequency heard by the person. Speed of sound \( = 340\;m{s^{ - 1}}\)

354722 A train is passing by a platform at a constant speed of \(40\;m/s\). The train horn is sounded at a frequency of \(378\;Hz.\) Find the overall change in frequency as detected by a person standing on the paltform, as the train moves from approaching to receding. (Take velocity of sound in air as \(320\;m/s\) )

354719 A source of sound is moving with a velocity of \(50\;m{s^{ - 1}}\) towards a stationary observer. The observer measures the frequency of sound as \(500\;Hz\). The apparent frequency of sound as heard by the observer when source is moving away from him with the same speed is (Speed of sound at room temperature \(350\;m{s^{ - 1}}\)

354720 A vehicle, with a horn of frequency \(n\) is moving with a velocity of \(30\;m{\rm{/}}s\) in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency \(\left(n+n_{1}\right)\). If the velocity of sound in air is \(300\;m{\rm{/}}s\), then

354721 A person \(P\) is \(600\;m\) away from the station when train is approaching station with \(72\;km{\rm{/}}h\), it blows a whistle of frequency \(800\;Hz\) when \(800\;m\) away from the station. Find the frequency heard by the person. Speed of sound \( = 340\;m{s^{ - 1}}\)

354722 A train is passing by a platform at a constant speed of \(40\;m/s\). The train horn is sounded at a frequency of \(378\;Hz.\) Find the overall change in frequency as detected by a person standing on the paltform, as the train moves from approaching to receding. (Take velocity of sound in air as \(320\;m/s\) )

354719 A source of sound is moving with a velocity of \(50\;m{s^{ - 1}}\) towards a stationary observer. The observer measures the frequency of sound as \(500\;Hz\). The apparent frequency of sound as heard by the observer when source is moving away from him with the same speed is (Speed of sound at room temperature \(350\;m{s^{ - 1}}\)

354720 A vehicle, with a horn of frequency \(n\) is moving with a velocity of \(30\;m{\rm{/}}s\) in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency \(\left(n+n_{1}\right)\). If the velocity of sound in air is \(300\;m{\rm{/}}s\), then

354721 A person \(P\) is \(600\;m\) away from the station when train is approaching station with \(72\;km{\rm{/}}h\), it blows a whistle of frequency \(800\;Hz\) when \(800\;m\) away from the station. Find the frequency heard by the person. Speed of sound \( = 340\;m{s^{ - 1}}\)

354722 A train is passing by a platform at a constant speed of \(40\;m/s\). The train horn is sounded at a frequency of \(378\;Hz.\) Find the overall change in frequency as detected by a person standing on the paltform, as the train moves from approaching to receding. (Take velocity of sound in air as \(320\;m/s\) )