Home
Class 12
PHYSICS
A stationary source of sound is emitting...

A stationary source of sound is emitting sound of frequency `500Hz`. Two observers `A` and `B` lying on the same line as the source, observe frequencies `480Hz` and `530 Hz` respectively. The velocity of `A` and `B` respectively are (in `m//s`), speed of sound `=300m//s`.

A

8,18

B

16,14

C

12,18

D

12,16

Text Solution

Verified by Experts

The correct Answer is:
C
Higher frequency heard will be when observer would move towards the source and lower frequency heard will be when observes moves away from the source.
`therefore 530 = 500 [ (300 + v_(01))/(300 - 0)] rArr v_(01) = 18 m// s`
Also , `480 = 500[(300 - v_(02))/(300 - 0)] rArr V_(02) = 12 m//s`
Promotional Banner

Topper's Solved these Questions

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE LEVEL 2|32 Videos

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE LEVEL 2 (MUTIPLE CORRECT TYPE)|20 Videos

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise LEVEL-2|41 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 stationary source emits sound waves of frequency 500 Hz. Two observes moving along a line passing through the source detect sount to be of frequencies 480 Hz and 530 Hz.Their respective speeds are, in ms^(-1) (Given speed of sound =300 m//s )

A source emits a sound of frequency of 400 Hz , but the listener hears it to be 390 Hz . Then

The source (S) of sound is moving constant velocity v_(0) as shown in diagram. An observer O listens to the sound emmited by the source. The observed frequency of the sound

A source frequency f gives 5 beats when sounded with a frequency 200Hz. The second harmonic of same source gives 10 beats when sounded with a source of frequency 420Hz. The value of f is

A source frequency f gives 5 beats when sounded with a frequency 200Hz. The second harmonic of same source gives 10 beats when sounded with a source of frequency 420Hz. The value of f 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 statinary observer receives a sound of frequency 2000 Hz. The variation of apparent frequency and time is shown. Find the speed of source, if velocity of sound is 300(m)/(s)

A source of sound emitting a note of frequency 200 Hz moves towards an observer with a velocity v equal to the velocity of sound. If the observer also moves away from the source with the same velocity v, the apparent frequency heard by the observer is

A siren emitting sound of frequency 800 Hz is going away from a static listener with a speed of 30 m/s. Frequency of the sound to be heard by the listener is ( Take velocity of sound as 300 m/s )

A source of sound which emitting a sound of frequency 600 Hz is moving towards a wall with a velocity 30 m/s. Three observes A, B, C moving with velocity 20 m/s, A away from the wall and B towards the wall and Inside the source, Velocity of sound in air is 330 m/s. Find the frequency of reflected sound observed by observer B

VMC MODULES ENGLISH-WAVE MOTION-JEE MAIN ARCHIVE LEVEL 1
  1. A closed organ pipe has a fundamental frequency of 1.5 kHz. The number...

    Text Solution

    |

  2. A string of length 1 m and mass 5 g is fixed at both ends. The tension...

    Text Solution

    |

  3. A train moves towards a stationary observer with speed 34 m/s. The tra...

    Text Solution

    |

  4. Equation of travelling wave on a stertched string of linear density 5 ...

    Text Solution

    |

  5. A resonance tube is old and has jagged end. It is still used in the la...

    Text Solution

    |

  6. A tavelling harmonic wave is represented by the equation y(x,t)=10...

    Text Solution

    |

  7. A person standing on an open ground hears the sound of a jet aeroplan...

    Text Solution

    |

  8. A wire of length 2L, is made by joining two wires A and B of same leng...

    Text Solution

    |

  9. A string is clamped at both the ends and it is vibrating in its 4^(th)...

    Text Solution

    |

  10. The pressure wave, P = 0.01 sin[1000t-3x]Nm^(-2), corresponds to the s...

    Text Solution

    |

  11. The correct figure that shows , schematically , the wave pattern produ...

    Text Solution

    |

  12. A string of length 2m is fixed at two ends. It is in resonance with a ...

    Text Solution

    |

  13. Two cars A and B are moving away from each other in opposite direction...

    Text Solution

    |

  14. A source of sound S is moving with a velocity of 50m//s towards a stat...

    Text Solution

    |

  15. A stationary source of sound is emitting sound of frequency 500Hz. Two...

    Text Solution

    |

  16. Two sources of sound S(1) and S(2) produce sound waves of same frequen...

    Text Solution

    |

  17. A small speaker delivers 2 W of audio will one detect 120 dB intensit...

    Text Solution

    |

  18. A tuning fork of frequency 480 Hz is used in an experiment for measuri...

    Text Solution

    |

  19. A progressive wave travelling along the positive x-direction is repres...

    Text Solution

    |

  20. A submarine (A) travelling at 18km//hr is being chased along the line ...

    Text Solution

    |