Home
Class 11
PHYSICS
An isotropic stationary source is emitti...

An isotropic stationary source is emitting waves of frequency n and wind is blowing due north. An observer A is on north of the source while observer B is on south the source. IF both the observers are stationary, then

A

frequency received by A is greater than n

B

frequency received by B is less than n

C

freqeuency received by A equals to that received by B

D

frequencies received by A and B cannot be calculated unless velocity of waves in still air and velcity of wind are known

Text Solution

Verified by Experts

The correct Answer is:
C
Since source and both the observer are stationary, therefore no change will be observed by the two observer. It means both the observers will receive waves with natural frequency, which is equal to n.
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Multiple Correct|44 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Assertion-Reasoning|24 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Subjective|56 Videos

  • RIGID BODY DYNAMICS 2

    CENGAGE PHYSICS ENGLISH|Exercise Interger|2 Videos

  • SUPERPOSITION AND STANDING WAVES

    CENGAGE PHYSICS ENGLISH|Exercise Comprehension Type|5 Videos

Similar Questions

Explore conceptually related problems

When the medium moves and the source and observer are stationary:

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

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 fixed source of sound emitting a certain frequency appears as f_(a) when the observer is apporoaching the source with upsilon_(0) and f_(r) when the observer recedes from the source with the same speed. The frequency of source is

A source emitting a sound of frequency f is placed at a large distance from an observer. The source starts moving towards the observer with a uniform acceleration a. Find the frequency heard by the observer corresponding to the wave emitted just after the source starts. The speed of sound in the medium is v.

A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving with a speed of 19.4ms^-1 at an angle of 60^(@) with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air 330ms^-1 ) is

A sound source emitting sound of frequency 450 Hz is approaching a stationary observer with velocity 30 ms^(-1) and another identical source is going away from the observer with the same velocity. If the velocity of sound is 330 ms^(-1) , then the difference of frequencies heard by observer is

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 .

Doppler shift in frequency of sound is independent of (Source is moving on the straight line joining source and observer)

A stationary source emits sound of frequency 1200 Hz. If would blows at the speed of 0.1 v. deduce (a) The change in the frequency for a stationary observer on the wind side of the source (b) Report the calculations for the case when there is no wind but the observer moves at 0.1 v speed towards the source (Given : velocity of sound = v)

CENGAGE PHYSICS ENGLISH-SOUND WAVES AND DOPPLER EFFECT-Single Correct
  1. A man standing on a platform hears the sound of frequency 604 Hz comin...

    Text Solution

    |

  2. A vehicle , with a horn of frequency n is moving with a velocity of 30...

    Text Solution

    |

  3. An isotropic stationary source is emitting waves of frequency n and wi...

    Text Solution

    |

  4. A train is moving with a constant speed along a cirular track. The eng...

    Text Solution

    |

  5. An observer moves towards a stationary source of sound with a velocity...

    Text Solution

    |

  6. An increase in intensity level of 1 dB implies an increase in intensit...

    Text Solution

    |

  7. In expressing sound intensity we take 10^(-12)(W)/(m^2) as the referen...

    Text Solution

    |

  8. The intensity level of two sounds are 100 dB and 50 dB. What is the ra...

    Text Solution

    |

  9. An engine running at speed (v)/(10) sounds a whistle of frequency 600 ...

    Text Solution

    |

  10. A source of sound produces waves of wavelength 60 cm when it is statio...

    Text Solution

    |

  11. The apparent frequency of the whistle of an engine changes in the rati...

    Text Solution

    |

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

    Text Solution

    |

  13. A source of sound is travelling with a velocity of 30(m)/(s) towards a...

    Text Solution

    |

  14. A source of sound emits 200piW power which is uniformly distributed ov...

    Text Solution

    |

  15. Two cars are moving on two perpendicular roads towards a crossing with...

    Text Solution

    |

  16. A tuning fork of frequency 380 Hz is moving towards a wall with a velo...

    Text Solution

    |

  17. A sound wave of frequency n travels horizontally to the right with spe...

    Text Solution

    |

  18. A boy is walking away from a well at a speed of 1.0 m//s in a directio...

    Text Solution

    |

  19. A source emitting a sound of frequency f is placed at a large distance...

    Text Solution

    |

  20. Due to a point isotropic sonic source, loudness at a point is L=60dB I...

    Text Solution

    |