Home
Class 12
PHYSICS
A source is moving with constant speed u...

A source is moving with constant speed `upsilon_(s) = 20 m//s` towards a stationary observer due east of the source. Wind is blowing at the speed of `20 m//s` at `60^(@)` north of east. The source has frequency `500 H_(Z)`. Speed of sound `= 300 m//s`. The frequency resgistered by the observer is approximately

A

541 Hz

B

552Hz

C

534Hz

D

517Hz

Text Solution

Verified by Experts

The correct Answer is:
C
`f=f_(0)((C+V_(m)-V_(0))/(C+V_(m)-V_(S))),V_(m)=+V_(V)cos60^(@)=+10m//s`
`implies f=500[(300+10-0)/(300+10-20)]=500xx(310)/(290)~~534Hz" " to`
Promotional Banner

Topper's Solved these Questions

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise LEVEL-2|41 Videos

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise JEE MAIN ARCHIVE LEVEL 1|56 Videos

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE LEVEL 2 (TRUE FALSE TYPE)|4 Videos

  • UNITS, MEASUREMENTS & ERRORS

    VMC MODULES ENGLISH|Exercise IN - CHAPTER EXERCISE - B|10 Videos

  • WORK ENERGY AND POWER

    VMC MODULES ENGLISH|Exercise IMPECCABLE|54 Videos

Similar Questions

Explore conceptually related problems

A car is moving with a constant velocity 10 m//s towards the stationary wall. The car blows a horn of frequency 320 Hz . The velocity of sound in air is 330 m//s . The beats frequency received by the observer is

An observer moves on the same line on which two sources of sound of frequency 660 Hz are present. The observer observes beat frequency of 10Hz . If speed of sound is 300m//s then speed of the observer is:

A source of sound of frequency 500 Hz is moving towards an observer with velocity 30 m/s . The speed of sound is 330 m/s . the frequency heard by the observer will be

At t=0 , observer and source are at same place. Now the source is projected with velocity 60 sqrt2 m/s at 45 ^(@) . Natural frequency of source is 1000 Hz.find the frequency heard by the observer at t=2s. Take speed of sound = 340 m/s

A source of sound is travelling towards a stationary observer. The frequency of sound heard by the observer is 25% more that the actual frequency. If the speed of sound is v, that of the source is

A source of sound is travelling with a velocity of 30(m)/(s) towards a stationary observer. If actual frequency of source is 1000 Hz and the wind is blowing with velocity 20(m)/(s) in a direction at 60^@C with the direction of motion of source, then the apparent frequency heard by observer is (speed of sound is 340(m)/(s) )

a bus is moving towards and stationary observer with speed 20 m/s blows a horn of frequency 200 Hz. the frequency of sound heard by the observer is approximately ( take speed of sound 320 m/s)

A sound source moves with a speed of 80 m//s relative to still air toward a stationary listener. The frequency of sound is 200 H_(Z) and speed of sound in air is 340 m//s . (a) Find the wavelength of the sound between the source and the listener. (b) Find the frequency heard by the listener.

A sound source is moving towards a stationary observer with 1/10 of the speed of sound. The ratio of apparent to real frequency is

A source of sound S is moving with a velocity of 50m//s towards a stationary observer. The observer measures the frequency of the source as 1000 Hz. What will be the apparent frequency of the source as 1000 Hz. What will be the apparent frequency of the source when it is moving away from the observer after crossing him? The velocity of the sound in the medium is 350m//s

VMC MODULES ENGLISH-WAVE MOTION-LEVEL-1
  1. A wall is moving with velocity u and a source of sound moves with velo...

    Text Solution

    |

  2. A disc of radius R is rotating uniformly with angular frequency . A so...

    Text Solution

    |

  3. A source is moving with constant speed upsilon(s) = 20 m//s towards a ...

    Text Solution

    |

  4. A tuning fork of frequency 512 Hz is vibrated with sonometer wire and...

    Text Solution

    |

  5. A small source of sound moves on a circle as shown in the figure and a...

    Text Solution

    |

  6. If the source is moving towards right, wavefront of sound waves get mo...

    Text Solution

    |

  7. A source of sound S is travelling at (100)/(3)(m)/(s) along a road, to...

    Text Solution

    |

  8. When a train is approaching the observer, the frequency of the whistle...

    Text Solution

    |

  9. A motorcycle starts from rest and accelerates along a straight line at...

    Text Solution

    |

  10. A plane progressive wave of frequency 25 Hz, amplitude 2.5 xx 10^(-5) ...

    Text Solution

    |

  11. The average power transmitted across a cross section by two sound wave...

    Text Solution

    |

  12. The speed of a transverse wave going on a wire having a length 50 cm ...

    Text Solution

    |

  13. A wave pulse passing on a string with speed of 40cms^-1 in the negativ...

    Text Solution

    |

  14. A particle on a stretched string supporting a travelling wave, takes 5...

    Text Solution

    |

  15. The resultant loudness at a point P is n dB higher than the loudness o...

    Text Solution

    |

  16. A tuning fork of frequency 256 h(Z) is moving towards a well with a ve...

    Text Solution

    |

  17. The sound level at a point 5.0 m away from a point source is 40 dB. Wh...

    Text Solution

    |

  18. If the intensity of sound is doubled, by how many decibels does the so...

    Text Solution

    |

  19. A bullet passes past a person at a speed of 220 m s^-1. Find the fract...

    Text Solution

    |

  20. For a certain organ pipe three successive resonance frequencies are ob...

    Text Solution

    |