Home
Class 11
PHYSICS
A 40 cm long brass rod is dropped one en...

A `40 cm` long brass rod is dropped one end first onto a hard floor but is caught before it topples over . With an `3 kHz` tone . The speed of sound in brass is

A

`600 m//s`

B

`1200 m//s`

C

`2400 m//s`

D

`4800 m//s`

Text Solution

Verified by Experts

The correct Answer is:
C
The brass rod is open at both ends .
So the longitudinal waves will have a fundamental frequency `f_(0) = (v)/( 2l)`.
`v = (3000) (2) ((40)/(100))`
`v = 2400 m//s`
Promotional Banner

Topper's Solved these Questions

  • SUPERPOSITION AND STANDING WAVES

    CENGAGE PHYSICS|Exercise Multiple|26 Videos

  • SUPERPOSITION AND STANDING WAVES

    CENGAGE PHYSICS|Exercise Assertion - Reasoning|6 Videos

  • SUPERPOSITION AND STANDING WAVES

    CENGAGE PHYSICS|Exercise Subjective|24 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS|Exercise Integer|16 Videos

  • THERMODYNAMICS

    CENGAGE PHYSICS|Exercise 24|1 Videos

Similar Questions

Explore conceptually related problems

A pipe 30 cm long is open at both ends. Which harmonic mode of the pipe is resonantly excited by a 1.1 kHz source ? (Take speed of sound in air = 330 ms^(-1) )

A steel rod 100 cm long is clamped at its centre. The fundmental frequency of longitudinal viberations of the rod are given to be 2.53kHz. What is the speed of sound is steel?

A metal rod 40 cm long is dropped on to a wooden floor and rebounds into air . Compressional waves of many frequencies are thereby set up in the rod . If the speed of compressional waves in the rod in 5500 m//s , what is the lowest frequency of compressional waves to which the rod resonates as it rebounds?

A pipe of 60 cm long and open at both the ends produces harmonics. Which harmonic mode of pipe resonates a 2.2 kHz source? Given, speed of sound in ari = 300 ms^(-1) .

A vibrating tuning fork is held over a water column with one end closed and the other open. As the water level is allowed to fall, a loud sound is heard for water levels separated by 17 cm. If the speed of sound in air is 340 m/s, the frequency of the tuning fork is:

A steel rod 100 cm long is clamped at its midpoint. The fundamental frequency of longitudinal vibrtions of the rod is 3 kHz. What is the speed of the sound in the rod?

At one end of a brass bar, 1 km long, a source of sound is placed. Two sounds are heard at the other end of the bar, by an interval of 2.6 seconds. Determine the velocity of sound in brass if its velocity in air is 330 m/s.

A 30 cm long pipe is open at both ends. Which harmonic mode of the pipe is resonantly excited by a 1. 65 KHz source ? [ Speed of sound in air = 330 m/s]

A pipe 17 cm long is closed at one end. Which harmonic mode of the pipe resonates a 1.5 kHz source? (Speed of sound in air = 340 m s^(-1) )

CENGAGE PHYSICS-SUPERPOSITION AND STANDING WAVES-Single Correct
  1. A tunig fork whose frequency as given by mufacturer is 512 Hz is being...

    Text Solution

    |

  2. A sounding fork whose frequency is 256 Hz is held over an empty measur...

    Text Solution

    |

  3. A 40 cm long brass rod is dropped one end first onto a hard floor but ...

    Text Solution

    |

  4. A metal bar clamped at its centre resonates in its fundamental mode to...

    Text Solution

    |

  5. A string under a tension of 100 N , emitting its fundamental mode , gi...

    Text Solution

    |

  6. The equation for the fundamental standing sound wave in a tube that is...

    Text Solution

    |

  7. A cylindrical tube open at both ends, has a fundamental frequency f in...

    Text Solution

    |

  8. A stiff wire is bent into a cylinder loop of diameter D. It is clamped...

    Text Solution

    |

  9. Two wires of radii r and 2 r are welded together end to end . The comb...

    Text Solution

    |

  10. An air column closed at one end and opened at the other end , resonate...

    Text Solution

    |

  11. Two identical sonometer wires have a fundamental frequency of 500 Hz w...

    Text Solution

    |

  12. A long tube open at the top is fixed verticallly and water level insid...

    Text Solution

    |

  13. Two open pipes A and B are sounded together such that beats are heard ...

    Text Solution

    |

  14. S1 and S2 are two coherent sources of radiations separated by distance...

    Text Solution

    |

  15. A travelling wave y = A sin (k x - omega t + theta) passes from a hea...

    Text Solution

    |

  16. The diagram below shows two pulses traveling towards each other in a u...

    Text Solution

    |

  17. Which of the figures, shows the pressure difference from regular atmos...

    Text Solution

    |

  18. An ideal organ pipe resonates at successive frequencies of 50 Hz , 150...

    Text Solution

    |

  19. When a string is vibrating in a standing wave pattern , the power tran...

    Text Solution

    |

  20. Two pipes are submerged in sea water , arranged as shown in figure . P...

    Text Solution

    |