Home
Class 12
PHYSICS
Two strings A and B of lengths,LA=80 cm ...

Two strings A and B of lengths,`L_A=80 cm` and `L_B=x cm` respectively are used separately in a sonometer. The ratio of their densities `(rho_A//rho_B)` is 0.81. The diameter of B is one-half that of A.if the strings have the same tension and fundamental frequency the value of x is

A

33

B

102

C

144

D

130

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 75

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET SET 77

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

Two strings A and B of lengths, L_(A)=80 cm and L_(B)=x cm respectively are used separately in a sonometer. The ratio of their densities (d_(A)//d_(B)) is 0.81. The diameter of B is one -half that of A. If the strings have the same tension and fundamental frequency the value of x is

Two copper wires A and B of length l and 2l respectively, have the same area of cross-section. The ratio of the resistivity of wire A to the resistivity of wire B is

Two unifrom brass rod A and B of length l and 2l and radii 2r respectively are heated to the same temperature. The ratio of the increase in the volume of A to that of B is

A sonometer wire of density rho and radius r is held between two bridges at a distance L apart . Tension in the wire is T. then the fundamental frequency of the wire will be

Two wires made up of the same material are of equal lengths but their diameter are in the ratio 1:2 . On stretching each of these two strings by the same tension , then the ratio of the fundamental frequency of these strings is

The length , radius , tension and density of string A are twice the same parameters of string B . Find the ratio of fundamental frequency of B to the fundamental frequency of A .

The tension, length, diameter and density of a string B are double than that of another string A. Which of the following overtones of B is same as the fundamental frequency of A?

The diameters of steel. rods A and B having the same length are 2 cm and 4 cm respectively. They are heated through 100^@C . What is the ratio of increase of length of A to that of B ?

Two solid spheres A and B each of radius R are made of materials of densities rho_A and rho_B respectively. Their moments of inertia about a diameter are I_A and I_B respectively. The value of I_A/I_B is

NTA MOCK TESTS-NTA NEET SET 76-PHYSICS
  1. A radioactive sample S(1) having the activity A(1) has twice the numbe...

    Text Solution

    |

  2. The dimensional formula for permittivity of free space (epsilon0) in t...

    Text Solution

    |

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

    Text Solution

    |

  4. In the figure , the intensity of waves arriving at D from two coherent...

    Text Solution

    |

  5. Ionization energy of He^(+) ion at minimum energy position is

    Text Solution

    |

  6. A particle moves along x-axis as x=4(t-2)+a(t-2)^2 Which of the foll...

    Text Solution

    |

  7. A disc of radius R and mass M is pivoted at the rim and it set for sma...

    Text Solution

    |

  8. Power supplied to a particle of mass 4 kg varies with time as P=(3t^(2...

    Text Solution

    |

  9. For an electron in the third orbit Bohr hydrogen atom, the moment of l...

    Text Solution

    |

  10. Radiations of two photon’s energy, twice and ten times the work functi...

    Text Solution

    |

  11. A positive charge particle having change q and mass m has velocity vec...

    Text Solution

    |

  12. Six moles of an ideal gas performs a cycle shown in figure. If the tem...

    Text Solution

    |

  13. A spring is stretched by applying a load to its free end. The strain...

    Text Solution

    |

  14. A metal rod of length 'L' and cross-sectional area 'A' is heated ...

    Text Solution

    |

  15. The length of a magnet is large compared to its width and breadth. The...

    Text Solution

    |

  16. A hoop rolls on a horizontal ground without slipping with linear speed...

    Text Solution

    |

  17. The ammeter reading in the given circuit of Fig . is -

    Text Solution

    |

  18. In the given figure the capacitor of plate area A is charged upto char...

    Text Solution

    |

  19. A gaseous mixture consists of 16g of helium and 16 g of oxygen. The ra...

    Text Solution

    |

  20. An underformed spring of spring constant k is connected to a bead of m...

    Text Solution

    |