Home
Class 12
PHYSICS
Two wires whose lengths are in ratio 3:2...

Two wires whose lengths are in ratio 3:2 are stretched with equal tension and give equal frequency . If the radii of the wires are in the ratio 3:2, then the ratio of densities of the wires is

A

`81:16`

B

`4:9`

C

`16:81`

D

`9:4`

Text Solution

Verified by Experts

The correct Answer is:
C
As `n_1 = n_2`
`l_1/l_2xxr_1/r_2 = sqrt(rho_2/rho_1)`
`3/2xx3/2 = sqrt(rho_2/rho_1)`
`9/4=sqrt(rho_2/rho_1)`
`81/16 = rho_2/ rho_1 therefore rho_1/rho_2= 16/81`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    NIKITA PUBLICATION|Exercise MCQS|350 Videos

  • SURFACE TENSION

    NIKITA PUBLICATION|Exercise Multiple Choice Questions (Question Given in MHT-CET )|31 Videos

Similar Questions

Explore conceptually related problems

Two steel wires of equal volume are stretched with the same tension. If the lengths of the wires are in the ratio 1:2 the ratio of their extensions will be

An electric current is passed through a circuit containing two wires of same material, connected in parallel. If the lengths and radii of the wires are in the ratio of 3:2 and 2:3, then the ratio of the current passing through the wire will be

An electric current is passed through a circuit containing two wires of the same material connected in parallel. If the lengths and radii of the wire are in the ratio (4)/(3) and (2)/(3) , then the ratio of the currents passing through the wires will be

An electric current is passed through a circuit containing two wires of the same material connected in parallel. If the length and radii of the wires are in the ratio 2//3 and 4//3 , then find the ratio of the current passing through the wires

Three wires whose lengths are in the ratio 3:8:18 and radii in the ratio 1:2:3 are connected in parallel. Find the ratio of the currents through them.

Two wires of the same material and length are stretched by the same force. Their masses are in the ratio 3:2 . Their elongations are in the ratio

NIKITA PUBLICATION-STATIONARY WAVES -MCQs
  1. A wave disturbance in a medium is described by y(x,t) = 0.02 "cos"(50p...

    Text Solution

    |

  2. A wave of length 2m is superimposed on its reflected wave to form a st...

    Text Solution

    |

  3. Two wires whose lengths are in ratio 3:2 are stretched with equal tens...

    Text Solution

    |

  4. Two sound waves each of frequency 500Hz are travelling along the same ...

    Text Solution

    |

  5. If a wave is propagated along the stretched string in the form

    Text Solution

    |

  6. The simplest mode of a vibration of the string is

    Text Solution

    |

  7. In a simple harmonic mode of vibration, on a string

    Text Solution

    |

  8. The lowest frequency of the vibrating string is

    Text Solution

    |

  9. The maximum or thershold wavelength of transverse stationary wave on ...

    Text Solution

    |

  10. Stading waves can be produced (A) On a string clamed at both ends. ...

    Text Solution

    |

  11. In law of length , the fundamental frequency of vibrating string is

    Text Solution

    |

  12. In law of tension, the fundamental frequency of vibrating string is

    Text Solution

    |

  13. In law of linear density, the fundamental frequency of vibrating strin...

    Text Solution

    |

  14. For a constant vibrating length, density of the material and tension i...

    Text Solution

    |

  15. The difference between two successive odd harmonics of vibrating strin...

    Text Solution

    |

  16. Two identical wires of different materials are stretched by the same ...

    Text Solution

    |

  17. A sitar wire is replaced by another wire of same length and material b...

    Text Solution

    |

  18. A sonometer wire is generally mounted over a large hollow sound box. T...

    Text Solution

    |

  19. A sonometer is plucked at 1/4 of its length . The most prominent would...

    Text Solution

    |

  20. A brick hung a somometer wire . If the brick is immersed in oil then i...

    Text Solution

    |