Home
Class 12
PHYSICS
The magnetic induction at a distance 'd'...

The magnetic induction at a distance 'd' from the magnetic pole of unknown strength 'm' is B. If an identical pole is now placed at a distance of 2d from the first pole, the force between the two poles is

A

`mB`

B

`(mB)/(2)`

C

`(mB)/(4) `

D

`2mB`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MOVING CHANGES & MEGNETISM)|95 Videos

  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - III|24 Videos

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise LAW OF MOTION|128 Videos

Similar Questions

Explore conceptually related problems

Two like magnetic poles :

SI unit of magnetic pole strength is

The distance between the focus and pole of the mirror

If L be the length of a bar magnet then separation between the two poles is naarly

The figure ,shows a transparent sphere of radius R and refractive index mu .An object O is placed at a distance x from the pole of the first surface so that a real image is formed at the pole of the exactly opposite surface. if an object is Placed at a distance R from the pole of first surface ,then the real image is formed at a distance R from thepole of the second surface.The refractive index mu of the spher is given by

A long bar magnet has a pole strength of 10 Am . Find the magnetic field at a point on the axis of the magnet at a distance of 5cm from the north pole of the magnet.

Let 10 vertical poles standing at equal distances on a straight line , subtend the same angle of elevation alpha at a point O on this line and all the poles are on the same side of O. If the height of the longest pole is h and the distance of foot the smallest pole form O is alpha then the distance between two consecutive poles, is

Let 10 vertical poles standing at equal distances on a straight line , subtend the same angle of elevation alpha at a point O on this line and all the poles are on the same side of O. If the height of the longest pole is h and the distance of foot the smallest pole form O is a then the distance between two consecutive poles, is

A short bar magnet is arranged with its north pole pointing gergraphical north. It is found that the horizontal component of earth's magnetic induction (B_(H)) is balaced by the magnetic induction of the magnet at a point which is at a distance of 20 cm from its centre .The magnetic moment of the magnet is ( if H = 4 xx 10^(-5) Wbm^(-2))

Two similar magnetic poles, having pole strengths in the ration 1:3 and placed 1m apart. Find the point where a unit pole experiences no net force due to these two poles

AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (MAGNETISM AND MATTER )
  1. The distance between a north pole of strength 6 xx 10^(-3)Am and a sou...

    Text Solution

    |

  2. Two north poles each of pole strength m and a south pole of pole stren...

    Text Solution

    |

  3. The magnetic induction at a distance 'd' from the magnetic pole of unk...

    Text Solution

    |

  4. The force between two short magnets is 'F'. When the pole strengths of...

    Text Solution

    |

  5. The poles of a horse-shoe magnet cach of pole strength 2A-m are at 4cm...

    Text Solution

    |

  6. Two poles of a horse shoe magnet each of pole strength 2 Am are 8 cm a...

    Text Solution

    |

  7. The length of a magnet of moment 5A m^2 is 14cm. The magnetic inductio...

    Text Solution

    |

  8. A magnet of length 10cm and magnetic moment 1 Am^2 is placed along the...

    Text Solution

    |

  9. Two identical magnetic poles each of strength 'm' are placed at the ve...

    Text Solution

    |

  10. The pole strength of a 12cm long bar magnet is 20Am. The magnetic indu...

    Text Solution

    |

  11. Two short bar magnets of magnetic moments m each are arranged at the o...

    Text Solution

    |

  12. The pole strength of a 12cm long bar magnet is 20Am. The magnetic indu...

    Text Solution

    |

  13. Two short magnets each of moment M are placed one over the other at ri...

    Text Solution

    |

  14. A short bar magnet of magnetic movement 5.25xx10^(-2)J T^(-1) is plac...

    Text Solution

    |

  15. Two solenoids acting as short bar magnets P and Q are arranged such th...

    Text Solution

    |

  16. Find the magnetic field due to a dipole of magnetic moment 1.2 A m^2 a...

    Text Solution

    |

  17. Two magnets of moments M1 and M2 are rigidly fixed together at their ...

    Text Solution

    |

  18. A short bar magnet of magnetic moment 0.32JT^(-1) is placed in a unifo...

    Text Solution

    |

  19. A magnet is suspended in the magnetic meridian with an untwisted wire....

    Text Solution

    |

  20. A magnet of magnetic moment 5Am^(2) is freely suspended in a uniform m...

    Text Solution

    |