Home
Class 12
PHYSICS
A short magnet is allowed to fall from r...

A short magnet is allowed to fall from rest along the axis of a horizontal conducting ring. The distance fallen by the magnet in one second may be

A

`5m`

B

`6m`

C

`4m`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
In case of free fall,
`d=1/2g t^2`
`=1/2(10)(1)^2=5m`
Here due to repulsion from inducd effects
`a lt g`
`:. dlt5m`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Objective Questions|3 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Level 1 Subjective|21 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Level 1 Assertion And Reason|10 Videos

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|97 Videos

  • ELECTROMAGNETIC WAVES

    DC PANDEY ENGLISH|Exercise Sec C|22 Videos

Similar Questions

Explore conceptually related problems

When a magnet is released from rest along the axis of a hollow conducting cylinder situated vertically as shown in the figure

A small magnet M is allowed to fall through a fixed horizontal conducting ring R . Let g be the acceleration due to gravity. The acceleration of M will be

A magnet is allowed to fall towards a metal ring. During the fall Its accelertion is

A bar magnet is released from rest along the axis of a very long, vertical copper tube. After some time the magnet.

A bar magnet is dropped along the axis of copper ring held horizontally. The acceleration of fall is

A stone is allowed to fall freely from rest. The ratio of the time taken to fall through the first metre and the second metre distance is

Assertion A magnetic is dropped along the axis of a circular conducting loop as shown in figure. Then, acceleration of magnet is always less than g. Reason When magnet is above the loop, then it will repel the magnet and when it is below the loop, then it will attract the magnet.

Figure shows a magnet suspended at the lower end of a spring while its length lies along the axis of a fixed circular conducting coil. The magnet is made to oscillate, Deflection in the galvanometer is

An object of mass m is allowed to fall from rest along a rough inclined plane. The speed of the object on reaching the bottom of the plane is proportional to:

A copper ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is

DC PANDEY ENGLISH-ELECTROMAGNETIC INDUCTION-Level 1 Objective
  1. The armature of a DC motor has 20Omega resistance. It draws a current ...

    Text Solution

    |

  2. In a transformer the output current and voltage are respectively 4 A a...

    Text Solution

    |

  3. When a loop moves towards a stationary magnet with speed v, the induce...

    Text Solution

    |

  4. A short magnet is allowed to fall from rest along the axis of a horizo...

    Text Solution

    |

  5. In figure, if the current i decreases at a rate alpha then VA-VB is

    Text Solution

    |

  6. A coil has an inductance of 50 m H and a resistance of 0.3Omega. If a ...

    Text Solution

    |

  7. A constant voltage is applied to a series R-L circuit by closing the s...

    Text Solution

    |

  8. A coil of area 10cm^2 and 10 turns is in magnetic field directed perpe...

    Text Solution

    |

  9. In figure final value of current in 10Omega resistor, when plug of key...

    Text Solution

    |

  10. A circuit consists of a circular loop of radius R kept in the plane of...

    Text Solution

    |

  11. A flat circular coil of n turns, area A and resitance R is placed in a...

    Text Solution

    |

  12. A small circular loop is suspended from an insulating thread. Another ...

    Text Solution

    |

  13. In the circuit shown in figure L=10H, R=5Omega, E=15V. The switch S is...

    Text Solution

    |

  14. In the figure shown a T-shaped conductor moves with constant angular v...

    Text Solution

    |

  15. A conducting rod of length l falls verticaly under gravity in a region...

    Text Solution

    |

  16. A semi circular conducting ring acb of radius R moves with constant sp...

    Text Solution

    |

  17. The ring B is coaxial with a solenoid A as shown in figure. As the swi...

    Text Solution

    |

  18. If the instantaneous magnetic flux and induced emf produced in a coil ...

    Text Solution

    |

  19. The figure shows a conducting ring of radius R. A uniform steady magne...

    Text Solution

    |

  20. A metallic rod of length l is hinged at the point M and is rotating ab...

    Text Solution

    |