Home
Class 11
PHYSICS
Two cars are moving on two perpendicular...

Two cars are moving on two perpendicular roads towards a crossing with uniform speeds of `72(km)/(h)` and `36(km)/(h)`. If second car blows horn of frequency 280 Hz, then the frequency of horn heard by the driver of first car when the line joining the cars makes angle of `45^@C` with the roads, will be (velocity of sound is `330(m)/(s)`)

A

321 Hz

B

298 Hz

C

289 Hz

D

280 Hz

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WAVES AND SOUND

    ERRORLESS |Exercise Graphical Quations|17 Videos

  • WAVES AND SOUND

    ERRORLESS |Exercise Assertion and Reason|16 Videos

  • WAVES AND SOUND

    ERRORLESS |Exercise Musical Sound|32 Videos

  • VECTORS

    ERRORLESS |Exercise Exercise|223 Videos

  • WORK , ENERGY , POWER AND COLLISION

    ERRORLESS |Exercise Self Evaluation Test|19 Videos

Similar Questions

Explore conceptually related problems

Two cars are moving on two perpendicular road towards a crossing with uniform speeds of 72km//hr and 3km//hr . If first car blows horn of frequency 280 Hz, then the frequency of horn heard by the driver of second car when line joining the cars make 45^@ angle with the roads, will be

Two cars are moving on two perpendicular roads towards a crossing with uniform speeds of 72 kmph and 36 kmph. If first car blows horn of frequency 300 Hz, then the frequency of horn heard by the driver of second car when line joining the cars make 45° angle with the roads will be (Speed of sound = 330 m/s)

A train is moving with speed 72 km/h towards a hill blows a whistle of frequency 1240Hz. the frequency of echo heard by driver is(speed of sound=330m/s)

Two cars moving in opposite directio approach each other with speed of 22m//s and 16.5m//s respectively . The driver of the first car blows a horn having a frequency 400Hz . The frequency heard by the driver of the second car is [ velocity of the sound 340m//s]

Two car moving in opposite directions approach each other with speed of 22m//s and 16.5m//s respectively. The driver of the first car blows a horn having a frequency 400 Hz . The frequency heard by the driver of the second car is [velocity of sound 340m//s ].

A car is moving towards a fixed wall, it blows form of frequency of 440 Hz . The frequency of reflected sound observed by the driver is 480 Hz then find the speed of car in km/hr. (Speed of sound is 350 m/sec

A motor car blowing a horn of frequency 124vib//sec moves with a velocity 72km//hr towards a tall wall. The frequency of the reflectedf sound heard by the driver will be (velocity of sound in air is 330 m//s )

ERRORLESS -WAVES AND SOUND-Critical Thinking Questions
  1. The difference between the apparent frequency of a sound of soun as pe...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  4. Two whistles Aand B produces notes of frequencies 660 Hz and 596 Hz re...

    Text Solution

    |

  5. A source producing sound of frequency 170 Hz is approaching a stationa...

    Text Solution

    |

  6. A police car moving at 22 m/s, chases a motorcylist. The police man so...

    Text Solution

    |

  7. An observer moves towards a stationary source of sound with a speed ((...

    Text Solution

    |

  8. A light pointer fixed to one prong of a tuning fork touches gnetly a s...

    Text Solution

    |

  9. Oxygen is 16 times heavier than hydrogen. At NTP equal volumn of hydro...

    Text Solution

    |

  10. The equation of displacement of two waves are given as y(1) = 10 si...

    Text Solution

    |

  11. The equation y=A cos^(2) (2pi nt -2 pi (x)/(lambda)) represents a wave...

    Text Solution

    |

  12. In a wave motion y = sin (kx - omega t),y can represent :-

    Text Solution

    |

  13. There are 10 sound sources each producing intensity I at a point indep...

    Text Solution

    |

  14. Ten tuning forks are arranged in increasing order of frequency is such...

    Text Solution

    |

  15. Forty - one forks are so arranged that each products 5 beat//s when s...

    Text Solution

    |

  16. Two identical wires have the same fundamental frequency of 400 Hz . wh...

    Text Solution

    |

  17. 25 tunning forks are arranged in series in the order of decreasing fre...

    Text Solution

    |

  18. 16 tuning forks are arranged in increasing order of frequency. Any two...

    Text Solution

    |

  19. Two idential straight wires are stretched so as to produce 6 beats per...

    Text Solution

    |

  20. The frequency of a stretched uniform wire under tension is in resonanc...

    Text Solution

    |