172997 A rocket is going away from the earth at a speed of $10^{6} \mathrm{~m} / \mathrm{s}$. If the wavelength of the light wave emitted by a light source on it is $5400 \AA$, what will be its Doppler shift?

172999 The apparent frequency of the whistle of an engine changes in the ratio $9: 8$ as the engine passes a stationary observer. If the velocity of the sound is $340 \mathrm{~ms}^{-1}$, then the velocity of the engine is

173000 A whistle of frequency $500 \mathrm{~Hz}$ tied to the end of a string of length $1.2 \mathrm{~m}$ revolves at $400 \mathrm{rev} / \mathrm{min}$. A listener standing some distance away in the plane of rotation of whistle hears frequencies in the range. (Speed of sound $=\mathbf{3 4 0} \mathbf{~ m} / \mathbf{s}$ )

173001 Consider the vehicle emitting sound wave of frequency $700 \mathrm{~Hz}$ moving towards an observer at a speed $22 \mathrm{~m} / \mathrm{s}$. Assuming the observer as well as the medium to be at rest and velocity of sound in the medium to be $330 \mathrm{~m} / \mathrm{s}$, the frequency of sound as measured by the observer is

173002 Two trains, each moving with a velocity of $30 \mathrm{~ms}^{-1}$, cross each other. One of the trains gives a whistle whose frequency is $600 \mathrm{~Hz}$. If the speed of sound is $330 \mathrm{~ms}^{-1}$, the apparent frequency for passengers sitting in the other train before crossing would be

172997 A rocket is going away from the earth at a speed of $10^{6} \mathrm{~m} / \mathrm{s}$. If the wavelength of the light wave emitted by a light source on it is $5400 \AA$, what will be its Doppler shift?

172999 The apparent frequency of the whistle of an engine changes in the ratio $9: 8$ as the engine passes a stationary observer. If the velocity of the sound is $340 \mathrm{~ms}^{-1}$, then the velocity of the engine is

173000 A whistle of frequency $500 \mathrm{~Hz}$ tied to the end of a string of length $1.2 \mathrm{~m}$ revolves at $400 \mathrm{rev} / \mathrm{min}$. A listener standing some distance away in the plane of rotation of whistle hears frequencies in the range. (Speed of sound $=\mathbf{3 4 0} \mathbf{~ m} / \mathbf{s}$ )

173001 Consider the vehicle emitting sound wave of frequency $700 \mathrm{~Hz}$ moving towards an observer at a speed $22 \mathrm{~m} / \mathrm{s}$. Assuming the observer as well as the medium to be at rest and velocity of sound in the medium to be $330 \mathrm{~m} / \mathrm{s}$, the frequency of sound as measured by the observer is

173002 Two trains, each moving with a velocity of $30 \mathrm{~ms}^{-1}$, cross each other. One of the trains gives a whistle whose frequency is $600 \mathrm{~Hz}$. If the speed of sound is $330 \mathrm{~ms}^{-1}$, the apparent frequency for passengers sitting in the other train before crossing would be

172997 A rocket is going away from the earth at a speed of $10^{6} \mathrm{~m} / \mathrm{s}$. If the wavelength of the light wave emitted by a light source on it is $5400 \AA$, what will be its Doppler shift?

172999 The apparent frequency of the whistle of an engine changes in the ratio $9: 8$ as the engine passes a stationary observer. If the velocity of the sound is $340 \mathrm{~ms}^{-1}$, then the velocity of the engine is

173000 A whistle of frequency $500 \mathrm{~Hz}$ tied to the end of a string of length $1.2 \mathrm{~m}$ revolves at $400 \mathrm{rev} / \mathrm{min}$. A listener standing some distance away in the plane of rotation of whistle hears frequencies in the range. (Speed of sound $=\mathbf{3 4 0} \mathbf{~ m} / \mathbf{s}$ )

173001 Consider the vehicle emitting sound wave of frequency $700 \mathrm{~Hz}$ moving towards an observer at a speed $22 \mathrm{~m} / \mathrm{s}$. Assuming the observer as well as the medium to be at rest and velocity of sound in the medium to be $330 \mathrm{~m} / \mathrm{s}$, the frequency of sound as measured by the observer is

173002 Two trains, each moving with a velocity of $30 \mathrm{~ms}^{-1}$, cross each other. One of the trains gives a whistle whose frequency is $600 \mathrm{~Hz}$. If the speed of sound is $330 \mathrm{~ms}^{-1}$, the apparent frequency for passengers sitting in the other train before crossing would be

172997 A rocket is going away from the earth at a speed of $10^{6} \mathrm{~m} / \mathrm{s}$. If the wavelength of the light wave emitted by a light source on it is $5400 \AA$, what will be its Doppler shift?

172999 The apparent frequency of the whistle of an engine changes in the ratio $9: 8$ as the engine passes a stationary observer. If the velocity of the sound is $340 \mathrm{~ms}^{-1}$, then the velocity of the engine is

173000 A whistle of frequency $500 \mathrm{~Hz}$ tied to the end of a string of length $1.2 \mathrm{~m}$ revolves at $400 \mathrm{rev} / \mathrm{min}$. A listener standing some distance away in the plane of rotation of whistle hears frequencies in the range. (Speed of sound $=\mathbf{3 4 0} \mathbf{~ m} / \mathbf{s}$ )

173001 Consider the vehicle emitting sound wave of frequency $700 \mathrm{~Hz}$ moving towards an observer at a speed $22 \mathrm{~m} / \mathrm{s}$. Assuming the observer as well as the medium to be at rest and velocity of sound in the medium to be $330 \mathrm{~m} / \mathrm{s}$, the frequency of sound as measured by the observer is

173002 Two trains, each moving with a velocity of $30 \mathrm{~ms}^{-1}$, cross each other. One of the trains gives a whistle whose frequency is $600 \mathrm{~Hz}$. If the speed of sound is $330 \mathrm{~ms}^{-1}$, the apparent frequency for passengers sitting in the other train before crossing would be

172997 A rocket is going away from the earth at a speed of $10^{6} \mathrm{~m} / \mathrm{s}$. If the wavelength of the light wave emitted by a light source on it is $5400 \AA$, what will be its Doppler shift?

172999 The apparent frequency of the whistle of an engine changes in the ratio $9: 8$ as the engine passes a stationary observer. If the velocity of the sound is $340 \mathrm{~ms}^{-1}$, then the velocity of the engine is

173000 A whistle of frequency $500 \mathrm{~Hz}$ tied to the end of a string of length $1.2 \mathrm{~m}$ revolves at $400 \mathrm{rev} / \mathrm{min}$. A listener standing some distance away in the plane of rotation of whistle hears frequencies in the range. (Speed of sound $=\mathbf{3 4 0} \mathbf{~ m} / \mathbf{s}$ )

173001 Consider the vehicle emitting sound wave of frequency $700 \mathrm{~Hz}$ moving towards an observer at a speed $22 \mathrm{~m} / \mathrm{s}$. Assuming the observer as well as the medium to be at rest and velocity of sound in the medium to be $330 \mathrm{~m} / \mathrm{s}$, the frequency of sound as measured by the observer is

173002 Two trains, each moving with a velocity of $30 \mathrm{~ms}^{-1}$, cross each other. One of the trains gives a whistle whose frequency is $600 \mathrm{~Hz}$. If the speed of sound is $330 \mathrm{~ms}^{-1}$, the apparent frequency for passengers sitting in the other train before crossing would be