Home
Class 12
PHYSICS
A wire X is half the diameter and half t...

A wire X is half the diameter and half the length of a wire Y of similar material. The ratio of resistance of X to that of Y is

A

`8:1`

B

`4:1`

C

`2:1`

D

`1:1`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • QUESTION-PAPERS-2013

    BITSAT GUIDE|Exercise Physics|40 Videos
  • QUESTION-PAPERS-2015

    BITSAT GUIDE|Exercise PHYSICS |40 Videos

Similar Questions

Explore conceptually related problems

Equal lengths of wires A and B are connected the left and the right gap respectively of a meter bridge. The null point is obtained at 0.4 m from the left end of the wire. If the diameters of the wires A and B are in the ratio 2:3 . Then the ratio of specific resistances of the materials of the wires will be

If the length of a wire is reduced to half, then it can hold the

Two wires A and B of the same material have their lengths in the ratio 1 : 5 and diameters in the ratio 3 : 2 . If the resistance of the wire B is 180 Omega , find the resistance of the wire A.

Two wires A and B equal mass and of the same metal are taken. The diameter of the wire A is half the diameter of wire B. If the resistance of wire A is 24 Omega , calculatate the resistance of wire B.

Two wires have lengths, diameters and specific resistances all in the ratio of 1: 2 . The resistance of the first wire is 10 ohm. Resistance of the second wire in ohm will be

Two wires A and B of the same material have their lengths in the ratio 5: 3 and diameter in the radius 2:3 . If the resistance of wire A is 15 Omega . find the resistance of wire B

Transverse waves are generated in two uniform steel wires A and B by attaching their free ends to a fork of frequency 500 Hz . The diameter of wire A is half that B and tension in wire A is half the tension in wire B . What is the ratio of velocities of waves in A and B ?

BITSAT GUIDE-QUESTION-PAPERS-2014-PHYSICS
  1. The electric field in a region is given by vecE = (A/x^3) vecI. Write ...

    Text Solution

    |

  2. Three capacitors C1 = 1 muF, C2 = 2 muF and C3 = 3 muF are connected ...

    Text Solution

    |

  3. Two long coaxial and conducting cylinders of radius a and b are separa...

    Text Solution

    |

  4. A wire X is half the diameter and half the length of a wire Y of simil...

    Text Solution

    |

  5. A narrow beam of protons and deutrons, each having the same momentum, ...

    Text Solution

    |

  6. For the circuit (figure) the currents is to be measured. The ammeter s...

    Text Solution

    |

  7. The susceptibility of magnesium at 300 K is 1.2 xx 10^(-5). At what te...

    Text Solution

    |

  8. A coil 10 turns and a resistance of 20Omega is connected in series wit...

    Text Solution

    |

  9. Voltage V and current I in AC circuit are given by V =50sin(50 t)volt,...

    Text Solution

    |

  10. Resolving power of a telescope will be more, fi the diameter (a) of th...

    Text Solution

    |

  11. The magnifying power of a telescope is 9. When it is adjusted for para...

    Text Solution

    |

  12. The angular size of the central maxima due to a single slit diffractio...

    Text Solution

    |

  13. Find the final intensity of light (I"), if the angle between the axes ...

    Text Solution

    |

  14. The threshold wavelength of tungsten is 2300 Å. If ultra voile...

    Text Solution

    |

  15. Graph betwen stopping potential for most energetic emitted photoelectr...

    Text Solution

    |

  16. In hydrogen atom, an electron jumps from bigger orbit to smaller orbit...

    Text Solution

    |

  17. A nucleus of uranium decays at rest into nuclei of thorium and helium....

    Text Solution

    |

  18. Let binding energy per nucleon of nucleus is denoted by underset(bn)(E...

    Text Solution

    |

  19. For a CE transistor amplifier the audio signal voltage across the col...

    Text Solution

    |

  20. The combination of gates shown below yields

    Text Solution

    |