Home
Class 12
PHYSICS
A proton beam enters a magnetic field of...

A proton beam enters a magnetic field of `10^(-4) " Wb " m^(-2)` Wb normally. If the specific charge of the proton is `10^(11) " C " kg^(-1)` and its velocity is `10^(9) " m "s^(-1)` then the radius of the circle described will be

A

1m

B

100m

C

10m

D

0.1m

Text Solution

Verified by Experts

The correct Answer is:
B
`r= (mv)/(qB) rArr r= (10^(9))/(10^(11) xx 10^(-4))= 10^(2)m = 100m`
Promotional Banner

Topper's Solved these Questions

  • K-CET-PHYSICS-2014

    SUNSTAR PUBLICATION|Exercise MCQs|60 Videos

  • K-CET-PHYSICS-2019

    SUNSTAR PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|59 Videos

Similar Questions

Explore conceptually related problems

Specific charge of a proton is 9.6 xx 10^7 C kg^-1 . The specific charge of an alpha particle will be

The specific charge of a proton is 9.6xx10^(7)C//kg . The specific charge of an alpha particle will be

A beam of alpha particles having specific charge 2.5 xx 10^7 C kg^-1 moves with a speed of 2 xx 10^5 m s^-1 in a magnetic field of 0.05 T. The radius of the circular path described by the alpha -particle is

Maximum velocity of the photoelectron emitted by a metal is 1.8 xx 10^(6) ms^(-1) . Take the value of specific charge of the electron is 1.8 xx 10^(11) C kg^(-1) . Then the stopping potential in volt is

Maximum velocity of the photoelectrons emitted by a metal surface 1.2xx10^(6)ms^(-1) . Assuming the specific charge of the electron to be 1.8xx10^(11)C kg^(-1) , the value of the stopping potential in volt will be

SUNSTAR PUBLICATION-K-CET-PHYSICS-2015-multiple choice questions
  1. 1 gram of ice is mixed with 1 gram of steam. At thermal equilibrium, t...

    Text Solution

    |

  2. What is heated from 0°C to 10°C, then its volume

    Text Solution

    |

  3. The efficiency of a Carnot engine which operates between the two tempe...

    Text Solution

    |

  4. The ratio of hydraulic stress to the corresponding strain is known as

    Text Solution

    |

  5. The angle between the dipole moment and electric field at any point on...

    Text Solution

    |

  6. Pick out the statement which is incorrect

    Text Solution

    |

  7. Two spheres carrying charges + 6 mu C and 9 mu C , seperated by a d...

    Text Solution

    |

  8. A streched string is vibrating in the second overtone , then the nu...

    Text Solution

    |

  9. When two tunning forks A and B are sounded together , 4 beats per se...

    Text Solution

    |

  10. Three resistances 2 Omega , 3 Omega and 4 Omega are connected in para...

    Text Solution

    |

  11. Four identical cells of emf E and and internal resistance r are to be...

    Text Solution

    |

  12. A parallel plate capacitor is charged and then isolated . The effect ...

    Text Solution

    |

  13. A spherical shell of radius 10 cm is carrying a charge q . If the ele...

    Text Solution

    |

  14. Three point charges 3 nC , 6 nC and 9 nC are placed at the corners of ...

    Text Solution

    |

  15. In the circuit shown below, the ammeter and the voltmeter readings are...

    Text Solution

    |

  16. Two cells of emf E(1) and E(2) are joined in opposition ( such that...

    Text Solution

    |

  17. A proton beam enters a magnetic field of 10^(-4) " Wb " m^(-2) Wb nor...

    Text Solution

    |

  18. Two concentric coils each of radius equal to 2π cm are placed right a...

    Text Solution

    |

  19. The resistance of the bulb filament is 100 at a temperature of 100^(@...

    Text Solution

    |

  20. In Wheatstone's network P = 2 Omega , Q = 2 Omega , R = 2 Omega and S...

    Text Solution

    |