Home
Class 12
PHYSICS
A charged particle moves in a uniform ma...

A charged particle moves in a uniform magnetic field perpendicular to it, with a radius of curvature 4 cm. On passing through a metallic sheet it loses half of its kinetic energy. Then, the radius of curvature of the particle is

A

`2 cm`

B

`4 cm`

C

`8 cm`

D

`2sqrt2 cm`

Text Solution

Verified by Experts

The correct Answer is:
D
`R=(mv)/(qB) =m/(qB) sqrt((2(KE))/m)=(sqrt(2m))/(qB)sqrt(KE)`
`implies (R_1)/(R_2) (sqrt(KE))/(sqrt(KE//2)) implies R_2=(R_1)/(sqrt2)=4/(sqrt2)=2sqrt2 cm`
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS|Exercise Exercises Multiple Correct|25 Videos

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS|Exercise Exercises Assertion -reasoning|8 Videos

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS|Exercise Exercises Subjective|10 Videos

  • KINETIC THEORY

    CENGAGE PHYSICS|Exercise Question Bank|31 Videos

  • Magnetism and Matter

    CENGAGE PHYSICS|Exercise Question Bank|50 Videos

Similar Questions

Explore conceptually related problems

A charged particle enters a uniform magnetic field perpendicular to it. The magnetic field

A particle is moving in a uniform magnetic field, then

A charged particle moves through a magnetic field perpendicular to its direction. Then

A charged particle is moving in a uniform magnetic field and losses 4% of its KE. The radius of curvature of its path change by

When a charged particle enters a uniform magnetic field its kinetic energy

A charged particle moves through a magnetic field in a direction perpendicular to it. Then the

CENGAGE PHYSICS-MAGNETIC FIELD AND MAGNETIC FORCES-Exercises Single Correct
  1. A uniform magnetic field exist in a region which forms an equilateral ...

    Text Solution

    |

  2. A particle of positive charge q and mass m enters with velocity Vhati ...

    Text Solution

    |

  3. In the plane mirror, the coordinates of image of a charged particle (i...

    Text Solution

    |

  4. A uniform magnetic field of 1.5T exists in a cylindrical region of rad...

    Text Solution

    |

  5. An insulating rod of length I carries a charge q distrubuted uniformly...

    Text Solution

    |

  6. Two straight segments of wire ab and bc each carrying current I, are p...

    Text Solution

    |

  7. A current carrying loop is placed in the non-uniform magnetic field wh...

    Text Solution

    |

  8. A current carrying loop lies on a smooth horizontal plane. Then,

    Text Solution

    |

  9. A semicircular wire of radius R, carrying current I, is placed in a ma...

    Text Solution

    |

  10. A wire of cross-sectional area A forms three sides of a square and is ...

    Text Solution

    |

  11. A proton of mass 1.67xx10^(-27)kg and charge 1.6xx10^(-19)c is projec...

    Text Solution

    |

  12. A beam of mixture of alpha particle and protons are accelerted through...

    Text Solution

    |

  13. An electron is projected at an angle theta with a uniform magnetic fie...

    Text Solution

    |

  14. A charged particle moves in a uniform magnetic field perpendicular to ...

    Text Solution

    |

  15. A particle of specific charge alpha is projected from origin with velo...

    Text Solution

    |

  16. A straight peice of conducting wire with mass M and length L is placed...

    Text Solution

    |

  17. In a moving coil galvanometer is based on the

    Text Solution

    |

  18. In a moving coil galvanometer, we use a radial magnetic field so that ...

    Text Solution

    |

  19. The current that must flow through the coil of a galvanometre so as to...

    Text Solution

    |

  20. In a moving coil galvanometer, the deflection of the coil theta is rel...

    Text Solution

    |