Doppler Effect
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WAVES

173050 A source of sound and a detector are moving along the same line with same speed

1 frequency registered by the detector is same as frequency of source.
2 frequency registered by the detector is same as frequency of source if source is ahead.
3 frequency registered by the detector is same as frequency of source if detector is ahead.
4 no sound is received by the detector.
J and K CET- 2006
WAVES

173051 Radiowaves of wavelength $\lambda$ are sent from a radar towards an aeroplane. The aeroplane is approaching towards the radar station. The wavelength of the radiowaves received after reflection from the aeroplane will be

1 $\lambda$
2 more than $\lambda$
3 less than $\lambda$
4 depends on speed of aeroplane
J and K CET- 2000
WAVES

173054 A train blows sound which is heard by a passenger sitting in the train which is $663 \mathrm{~Hz}$. The train is moving towards a stationary observer at crossing, hears the signal at $700 \mathrm{~Hz}$. Assuming the velocity of sound in air as $340 \mathrm{~m}$ $\mathrm{s}^{-1}$, the speed of the train is

1 $17.9 \mathrm{~m} \mathrm{~s}^{-1}$
2 $64.4 \mathrm{~m} \mathrm{~s}^{-1}$
3 $35.8 \mathrm{~m} \mathrm{~s}^{-1}$
4 $3.6 \mathrm{~m} \mathrm{~s}^{-1}$
J and K CET- 1997
WAVES

173068 Doppler's effect in sound takes place when source and observer are

1 stationary
2 moving with same velocity
3 in relative motion
4 None of the above
UP CPMT-2002
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WAVES

173050 A source of sound and a detector are moving along the same line with same speed

1 frequency registered by the detector is same as frequency of source.
2 frequency registered by the detector is same as frequency of source if source is ahead.
3 frequency registered by the detector is same as frequency of source if detector is ahead.
4 no sound is received by the detector.
J and K CET- 2006
WAVES

173051 Radiowaves of wavelength $\lambda$ are sent from a radar towards an aeroplane. The aeroplane is approaching towards the radar station. The wavelength of the radiowaves received after reflection from the aeroplane will be

1 $\lambda$
2 more than $\lambda$
3 less than $\lambda$
4 depends on speed of aeroplane
J and K CET- 2000
WAVES

173054 A train blows sound which is heard by a passenger sitting in the train which is $663 \mathrm{~Hz}$. The train is moving towards a stationary observer at crossing, hears the signal at $700 \mathrm{~Hz}$. Assuming the velocity of sound in air as $340 \mathrm{~m}$ $\mathrm{s}^{-1}$, the speed of the train is

1 $17.9 \mathrm{~m} \mathrm{~s}^{-1}$
2 $64.4 \mathrm{~m} \mathrm{~s}^{-1}$
3 $35.8 \mathrm{~m} \mathrm{~s}^{-1}$
4 $3.6 \mathrm{~m} \mathrm{~s}^{-1}$
J and K CET- 1997
WAVES

173068 Doppler's effect in sound takes place when source and observer are

1 stationary
2 moving with same velocity
3 in relative motion
4 None of the above
UP CPMT-2002
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WAVES

173050 A source of sound and a detector are moving along the same line with same speed

1 frequency registered by the detector is same as frequency of source.
2 frequency registered by the detector is same as frequency of source if source is ahead.
3 frequency registered by the detector is same as frequency of source if detector is ahead.
4 no sound is received by the detector.
J and K CET- 2006
WAVES

173051 Radiowaves of wavelength $\lambda$ are sent from a radar towards an aeroplane. The aeroplane is approaching towards the radar station. The wavelength of the radiowaves received after reflection from the aeroplane will be

1 $\lambda$
2 more than $\lambda$
3 less than $\lambda$
4 depends on speed of aeroplane
J and K CET- 2000
WAVES

173054 A train blows sound which is heard by a passenger sitting in the train which is $663 \mathrm{~Hz}$. The train is moving towards a stationary observer at crossing, hears the signal at $700 \mathrm{~Hz}$. Assuming the velocity of sound in air as $340 \mathrm{~m}$ $\mathrm{s}^{-1}$, the speed of the train is

1 $17.9 \mathrm{~m} \mathrm{~s}^{-1}$
2 $64.4 \mathrm{~m} \mathrm{~s}^{-1}$
3 $35.8 \mathrm{~m} \mathrm{~s}^{-1}$
4 $3.6 \mathrm{~m} \mathrm{~s}^{-1}$
J and K CET- 1997
WAVES

173068 Doppler's effect in sound takes place when source and observer are

1 stationary
2 moving with same velocity
3 in relative motion
4 None of the above
UP CPMT-2002
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
WAVES

173050 A source of sound and a detector are moving along the same line with same speed

1 frequency registered by the detector is same as frequency of source.
2 frequency registered by the detector is same as frequency of source if source is ahead.
3 frequency registered by the detector is same as frequency of source if detector is ahead.
4 no sound is received by the detector.
J and K CET- 2006
WAVES

173051 Radiowaves of wavelength $\lambda$ are sent from a radar towards an aeroplane. The aeroplane is approaching towards the radar station. The wavelength of the radiowaves received after reflection from the aeroplane will be

1 $\lambda$
2 more than $\lambda$
3 less than $\lambda$
4 depends on speed of aeroplane
J and K CET- 2000
WAVES

173054 A train blows sound which is heard by a passenger sitting in the train which is $663 \mathrm{~Hz}$. The train is moving towards a stationary observer at crossing, hears the signal at $700 \mathrm{~Hz}$. Assuming the velocity of sound in air as $340 \mathrm{~m}$ $\mathrm{s}^{-1}$, the speed of the train is

1 $17.9 \mathrm{~m} \mathrm{~s}^{-1}$
2 $64.4 \mathrm{~m} \mathrm{~s}^{-1}$
3 $35.8 \mathrm{~m} \mathrm{~s}^{-1}$
4 $3.6 \mathrm{~m} \mathrm{~s}^{-1}$
J and K CET- 1997
WAVES

173068 Doppler's effect in sound takes place when source and observer are

1 stationary
2 moving with same velocity
3 in relative motion
4 None of the above
UP CPMT-2002