Doppler Effect
WAVES

173069 A source of sound of frequency $450 \mathrm{cycle} / \mathrm{sec}$ is moving towards a stationary observer with 34 $\mathrm{m} / \mathrm{s}$ speed. If the speed of sound is $340 \mathrm{~m} / \mathrm{s}$ then the apparent frequency will be

1 $410 \mathrm{cps}$
2 $550 \mathrm{cps}$
3 $500 \mathrm{cps}$
4 $450 \mathrm{cps}$
WAVES

173070 Doppler shift in frequency does not depend upon

1 frequency of the wave produced
2 distance between source and listener/ observer
3 velocity of the source
4 velocity of listener/observer
WAVES

173089 A vehicle, with a horn of frequency $n$ is moving with a velocity of $30 \mathrm{~m} / \mathrm{s}$ in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency $n+n_{1}$. Then (If the sound velocity in air is $300 \mathrm{~m} / \mathrm{s}$ )

1 $\mathrm{n}_{1}=10 \mathrm{n}$
2 $\mathrm{n}_{1}=0$
3 $\mathrm{n}_{1}=0.1 \mathrm{n}$
4 $\mathrm{n}_{1}=-0.1 \mathrm{n}$
WAVES

173095 A source of sound producing wavelength of $50 \mathrm{~cm}$ is moving away from stationary observer with $\frac{1}{5}$ speed of sound. Then, what is the wavelength of sound heard by observer?

1 $70 \mathrm{~cm}$
2 $55 \mathrm{~cm}$
3 $40 \mathrm{~cm}$
4 $60 \mathrm{~cm}$
WAVES

173069 A source of sound of frequency $450 \mathrm{cycle} / \mathrm{sec}$ is moving towards a stationary observer with 34 $\mathrm{m} / \mathrm{s}$ speed. If the speed of sound is $340 \mathrm{~m} / \mathrm{s}$ then the apparent frequency will be

1 $410 \mathrm{cps}$
2 $550 \mathrm{cps}$
3 $500 \mathrm{cps}$
4 $450 \mathrm{cps}$
WAVES

173070 Doppler shift in frequency does not depend upon

1 frequency of the wave produced
2 distance between source and listener/ observer
3 velocity of the source
4 velocity of listener/observer
WAVES

173089 A vehicle, with a horn of frequency $n$ is moving with a velocity of $30 \mathrm{~m} / \mathrm{s}$ in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency $n+n_{1}$. Then (If the sound velocity in air is $300 \mathrm{~m} / \mathrm{s}$ )

1 $\mathrm{n}_{1}=10 \mathrm{n}$
2 $\mathrm{n}_{1}=0$
3 $\mathrm{n}_{1}=0.1 \mathrm{n}$
4 $\mathrm{n}_{1}=-0.1 \mathrm{n}$
WAVES

173095 A source of sound producing wavelength of $50 \mathrm{~cm}$ is moving away from stationary observer with $\frac{1}{5}$ speed of sound. Then, what is the wavelength of sound heard by observer?

1 $70 \mathrm{~cm}$
2 $55 \mathrm{~cm}$
3 $40 \mathrm{~cm}$
4 $60 \mathrm{~cm}$
WAVES

173069 A source of sound of frequency $450 \mathrm{cycle} / \mathrm{sec}$ is moving towards a stationary observer with 34 $\mathrm{m} / \mathrm{s}$ speed. If the speed of sound is $340 \mathrm{~m} / \mathrm{s}$ then the apparent frequency will be

1 $410 \mathrm{cps}$
2 $550 \mathrm{cps}$
3 $500 \mathrm{cps}$
4 $450 \mathrm{cps}$
WAVES

173070 Doppler shift in frequency does not depend upon

1 frequency of the wave produced
2 distance between source and listener/ observer
3 velocity of the source
4 velocity of listener/observer
WAVES

173089 A vehicle, with a horn of frequency $n$ is moving with a velocity of $30 \mathrm{~m} / \mathrm{s}$ in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency $n+n_{1}$. Then (If the sound velocity in air is $300 \mathrm{~m} / \mathrm{s}$ )

1 $\mathrm{n}_{1}=10 \mathrm{n}$
2 $\mathrm{n}_{1}=0$
3 $\mathrm{n}_{1}=0.1 \mathrm{n}$
4 $\mathrm{n}_{1}=-0.1 \mathrm{n}$
WAVES

173095 A source of sound producing wavelength of $50 \mathrm{~cm}$ is moving away from stationary observer with $\frac{1}{5}$ speed of sound. Then, what is the wavelength of sound heard by observer?

1 $70 \mathrm{~cm}$
2 $55 \mathrm{~cm}$
3 $40 \mathrm{~cm}$
4 $60 \mathrm{~cm}$
WAVES

173069 A source of sound of frequency $450 \mathrm{cycle} / \mathrm{sec}$ is moving towards a stationary observer with 34 $\mathrm{m} / \mathrm{s}$ speed. If the speed of sound is $340 \mathrm{~m} / \mathrm{s}$ then the apparent frequency will be

1 $410 \mathrm{cps}$
2 $550 \mathrm{cps}$
3 $500 \mathrm{cps}$
4 $450 \mathrm{cps}$
WAVES

173070 Doppler shift in frequency does not depend upon

1 frequency of the wave produced
2 distance between source and listener/ observer
3 velocity of the source
4 velocity of listener/observer
WAVES

173089 A vehicle, with a horn of frequency $n$ is moving with a velocity of $30 \mathrm{~m} / \mathrm{s}$ in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency $n+n_{1}$. Then (If the sound velocity in air is $300 \mathrm{~m} / \mathrm{s}$ )

1 $\mathrm{n}_{1}=10 \mathrm{n}$
2 $\mathrm{n}_{1}=0$
3 $\mathrm{n}_{1}=0.1 \mathrm{n}$
4 $\mathrm{n}_{1}=-0.1 \mathrm{n}$
WAVES

173095 A source of sound producing wavelength of $50 \mathrm{~cm}$ is moving away from stationary observer with $\frac{1}{5}$ speed of sound. Then, what is the wavelength of sound heard by observer?

1 $70 \mathrm{~cm}$
2 $55 \mathrm{~cm}$
3 $40 \mathrm{~cm}$
4 $60 \mathrm{~cm}$