Home
Class 12
PHYSICS
The wavelength of two notes in air are 4...

The wavelength of two notes in air are `40/195 m` and `40/193 m`. Each note produces 9 beats per second separately with third note of fixed frequency. The velocity of sound in air in `m//s` is

A

360

B

320

C

300

D

340

Text Solution

Verified by Experts

The correct Answer is:
A
Beat frequency of two waves is given by, `V_(beat)=V_1-V_2`
`V_(beat)=V/((40/195))-V/((40/193))`
`9+9=(195V)/40-(193V)/40`
`18=(195V-193V)/40`
`V=360 m//s`
Promotional Banner

Topper's Solved these Questions

  • THERMAL CONDUCTIVITY

    SIA PUBLICATION|Exercise Problems|96 Videos

  • WAVES OPTICS

    SIA PUBLICATION|Exercise M.C.Q|23 Videos

Similar Questions

Explore conceptually related problems

The wavelength of two nodes in air are 36/195 m and 36/193 m. Each node products 10 beats//s seprately with a third node of fixed frequency. The velocity of sound in air in m//s is

Wavelengths of two notes in air are 80/175 m and 80/173 m. Each note produces 4 beats/s, with a third note of a fixed frequency. The speed of sound in air is

The sound waves of wavelength 5 m and 6 m formed 30 beats in 3 s. The velocity of sound is

Two open organ pipes 80 and 81 cm long found to give 26 beats in 10 sec, when each is sounding its fundamental note. Find the velocity of sound in air.

Minimum distance between sources of sound and reflecting surface for an ECHO is ( Taking velocity of sound in air to be 330 m/s )

A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of air column in the pipe whose frequencies lie below 1250Hz. The velocity of sound in air is 340 m/s.

An air column in tun=be 32cm long, closed at one end, is in resonace with a tuning fork. The air column in another tube, open at both ends, of length 66cm is in resonance with another tuning frok.When those two tuning forks are sounded together , they produce 8 beats per second together, they produce 8 beats per second. then the frquencies of the twpo tuning forks are, (consider fundamental frequencies only)

Two organ pipes of lengths 65cm and70 cm respectively , are sounded simultaneosly. How many beats per second will be produced between the fundamental of the two pipes ? ( Velocity of sound = 330 m //s )

SIA PUBLICATION-WAVES-PROBLEMS
  1. A unifrom rope of mass 0.1kg and length 2.45 m hangs from a rigid supp...

    Text Solution

    |

  2. When a vibrating tuning fork is placed on a sound box of a sonometer, ...

    Text Solution

    |

  3. The wavelength of two notes in air are 40/195 m and 40/193 m. Each not...

    Text Solution

    |

  4. Two unifrom strectched strings A and B, made of steel, are vibrating u...

    Text Solution

    |

  5. Two soureces A and B are sending notes of frequency 680Hz.A listener m...

    Text Solution

    |

  6. Two identical piano wires have a fundamental frequency of 600 cycle pe...

    Text Solution

    |

  7. When sound wave of wavelength lambda is propagating in a medium, the m...

    Text Solution

    |

  8. A car is moving with a speed of the 72 Kmh^-1 towards a hill. Car blow...

    Text Solution

    |

  9. A whistle of frequency 540 Hz rotates in a horizontal circle of radius...

    Text Solution

    |

  10. A segment of wire vibrates with a fundamental frequency of 450 Hz unde...

    Text Solution

    |

  11. Two strings A and B of lengths,LA=80 cm and LB=x cm respectively are u...

    Text Solution

    |

  12. An observer is standing 500 m away from a vertical hill. Starting betw...

    Text Solution

    |

  13. A vehicle sounding a whistle of frequency 256Hz is moving on a straigh...

    Text Solution

    |

  14. A transverse wave propagating on a stretched string of linear density ...

    Text Solution

    |

  15. The wavelength of two nodes in air are 36/195 m and 36/193 m. Each nod...

    Text Solution

    |

  16. An iron load of 2Kg is suspended in the air from the free end of a son...

    Text Solution

    |

  17. Two unifrom strectched strings A and B, made of steel, are vibrating u...

    Text Solution

    |

  18. If the length of a stretched string is shortened by 40 % and the tensi...

    Text Solution

    |

  19. An auditorium has volume of 10^5 m^3 and surface area of absorption 2x...

    Text Solution

    |

  20. A metallic wire with tension T and at temperature 30 ^0 C vibrates wit...

    Text Solution

    |