173060 A car moving at a velocity of $17 \mathrm{~ms}^{-1}$ towards an approaching bus that blows a horn at a frequency of $640 \mathrm{~Hz}$ on a straight track. The frequency of this horn appears to be $680 \mathrm{~Hz}$ to the car driver. If the velocity of sound in air is $340 \mathrm{~ms}^{-1}$, then the velocity of the approaching bus is

173061 A train approaching a railway platform with a speed of $20 \mathrm{~ms}^{-1}$ starts blowing the whistle. Speed of sound in air is $340 \mathrm{~ms}^{-1}$. If the frequency of the emitted sound from the whistle is $640 \mathrm{~Hz}$, the frequency of sound to a person standing on the platform will appear to be

173062 A train is moving with a constant speed along a circular track. The engine of the train emits a sound of frequency $f$. The frequency heard by the guard at rear end of the train is.

173063 Two sources are at a finite distance apart. They emit sound of wavelength $\lambda$. An observer situated between them on line joining the sources, approaches towards on source with speed $u$, then the number of beats heard per second by observe will be.

173060 A car moving at a velocity of $17 \mathrm{~ms}^{-1}$ towards an approaching bus that blows a horn at a frequency of $640 \mathrm{~Hz}$ on a straight track. The frequency of this horn appears to be $680 \mathrm{~Hz}$ to the car driver. If the velocity of sound in air is $340 \mathrm{~ms}^{-1}$, then the velocity of the approaching bus is

173061 A train approaching a railway platform with a speed of $20 \mathrm{~ms}^{-1}$ starts blowing the whistle. Speed of sound in air is $340 \mathrm{~ms}^{-1}$. If the frequency of the emitted sound from the whistle is $640 \mathrm{~Hz}$, the frequency of sound to a person standing on the platform will appear to be

173062 A train is moving with a constant speed along a circular track. The engine of the train emits a sound of frequency $f$. The frequency heard by the guard at rear end of the train is.

173063 Two sources are at a finite distance apart. They emit sound of wavelength $\lambda$. An observer situated between them on line joining the sources, approaches towards on source with speed $u$, then the number of beats heard per second by observe will be.

173060 A car moving at a velocity of $17 \mathrm{~ms}^{-1}$ towards an approaching bus that blows a horn at a frequency of $640 \mathrm{~Hz}$ on a straight track. The frequency of this horn appears to be $680 \mathrm{~Hz}$ to the car driver. If the velocity of sound in air is $340 \mathrm{~ms}^{-1}$, then the velocity of the approaching bus is

173061 A train approaching a railway platform with a speed of $20 \mathrm{~ms}^{-1}$ starts blowing the whistle. Speed of sound in air is $340 \mathrm{~ms}^{-1}$. If the frequency of the emitted sound from the whistle is $640 \mathrm{~Hz}$, the frequency of sound to a person standing on the platform will appear to be

173062 A train is moving with a constant speed along a circular track. The engine of the train emits a sound of frequency $f$. The frequency heard by the guard at rear end of the train is.

173063 Two sources are at a finite distance apart. They emit sound of wavelength $\lambda$. An observer situated between them on line joining the sources, approaches towards on source with speed $u$, then the number of beats heard per second by observe will be.

173060 A car moving at a velocity of $17 \mathrm{~ms}^{-1}$ towards an approaching bus that blows a horn at a frequency of $640 \mathrm{~Hz}$ on a straight track. The frequency of this horn appears to be $680 \mathrm{~Hz}$ to the car driver. If the velocity of sound in air is $340 \mathrm{~ms}^{-1}$, then the velocity of the approaching bus is

173061 A train approaching a railway platform with a speed of $20 \mathrm{~ms}^{-1}$ starts blowing the whistle. Speed of sound in air is $340 \mathrm{~ms}^{-1}$. If the frequency of the emitted sound from the whistle is $640 \mathrm{~Hz}$, the frequency of sound to a person standing on the platform will appear to be

173062 A train is moving with a constant speed along a circular track. The engine of the train emits a sound of frequency $f$. The frequency heard by the guard at rear end of the train is.

173063 Two sources are at a finite distance apart. They emit sound of wavelength $\lambda$. An observer situated between them on line joining the sources, approaches towards on source with speed $u$, then the number of beats heard per second by observe will be.