Home
Class 11
PHYSICS
When source and detector are stationary ...

When source and detector are stationary but the wind is blowing at speed `v_W`, the apparent wavelength `lamda'` on the wind side is related to actual wavelength `lamda` by [take speed of sound is air as v]

A

`lamda'=lamda`

B

`lamda'=(v_W)/(v)lamda`

C

`lamda'=(v_W+v)/(v)lamda`

D

`lamda'=(v)/(v-v_W)lamda`

Text Solution

Verified by Experts

The correct Answer is:
C


`lamda'=(v+v_(omega))/(f)=(v+v_(omega))/(v)lamda`
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

A sound source and listener are both stationary and a strong wind is blowing. Is there a Doppler effect?

How are the wavelength and frequency of a sound wave related to its speed ?

How are the wavelength and frequency of a sound wave related to its speed ?

When source of sound moves towards a stationary observer, the wavelength of sound received by him

An observer is approaching with a speed v , towards a stationary source emitting sound waves of wavelength lambda_0 . The wavelength shift detected by the observer is ( Take c= speed of sound )

when a source of sound of frequency f crosses stationary observer with a speed v_(s) (lt lt speed of sound v) , the apparent change in frequency Δf is given by

When a centimeter thick surface is illuminated with light of wavelength lamda , the stopping potential is V. When the same surface is illuminated by light of wavelength 2lamda , the stopping potential is (V)/(3) . Threshold wavelength for the metallic surface is

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

The de Broglie wavelength lamda of an electron accelerated through a potential V in volts is

Speed of sound wave is v. If a reflector moves towards a stationary source emitting waves of frequency f with speed u, the wavelength of reflected waves will be

CENGAGE PHYSICS ENGLISH-SOUND WAVES AND DOPPLER EFFECT-Single Correct
  1. If the source is moving towards right, wavefront of sound waves get mo...

    Text Solution

    |

  2. Consider a source of sound S and an observer P. The sound source is of...

    Text Solution

    |

  3. When source and detector are stationary but the wind is blowing at spe...

    Text Solution

    |

  4. Figure. Represents the displacement y versus distance x along the dire...

    Text Solution

    |

  5. The driver of a car approaching a vertical wall notices that the frequ...

    Text Solution

    |

  6. The difference between the apparent frequency of a source of sound as ...

    Text Solution

    |

  7. The frequency of a radar is 780 MHz. After getting reflected from an a...

    Text Solution

    |

  8. A train moves towards a stationary observer with speed 34 m//s. The tr...

    Text Solution

    |

  9. A siren placed at a railway platfrom is emitted sound of frequency 5 k...

    Text Solution

    |

  10. A person speaking normally produces a sound intensity of 40 dB at a di...

    Text Solution

    |

  11. A police car moving at 22(m)/(s) chases a motorcyclist. The police man...

    Text Solution

    |

  12. In sport meet the timing of a 200 m straight dash is recorded at the f...

    Text Solution

    |

  13. When a source moves away from a stationary observer, the frequency is ...

    Text Solution

    |

  14. Length of a string of density rho and Young's modulus Y under tension ...

    Text Solution

    |

  15. Source and observer start moving simulatneously along x and y-axis res...

    Text Solution

    |

  16. A statinary observer receives a sound of frequency 2000 Hz. The variat...

    Text Solution

    |

  17. A source of sound of frequency f1 is placed on the ground. A detector ...

    Text Solution

    |

  18. A sound wave of frequency f travels horizontally to the right . It is ...

    Text Solution

    |

  19. A man is watching two trains, one leaving and the other coming in with...

    Text Solution

    |

  20. The intensity of a sound wave gets reduced by 20% on passing through a...

    Text Solution

    |