Home
Class 12
PHYSICS
A beam of cathode rays is subjected to c...

A beam of cathode rays is subjected to crossed electric (E ) and magnetic fields (B). The fields are adjusted such that the beam is not deflected. The specific charge of the cathode rays is given by

A

`(B^(2))/(2VE^(2))`

B

`(2VB^(2))/(E^(2))`

C

`(2VE^(2))/(B^(2))`

D

`(E^(2))/(2VB^(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGE AND MAGNESIUM

    AAKASH INSTITUTE|Exercise SECTION D|16 Videos

  • MOVING CHARGE AND MAGNESIUM

    AAKASH INSTITUTE|Exercise SECTION B|25 Videos

  • MOTION IN STRAIGHT LINE

    AAKASH INSTITUTE|Exercise Assignment (SECTION - J)|2 Videos

  • MOVING CHARGES AND MAGNETISM

    AAKASH INSTITUTE|Exercise Assignment Section J (Aakash Challengers Questions)|5 Videos

Similar Questions

Explore conceptually related problems

The specific charge for a cathode ray.

The specific charge for a cathode ray.

Value of e/m (specific charge) of the cathode ray particles

Why is charge on cathode ray particles ?

X-ray beam can be deflected

The ratio e//m i.e. specific , for a cathode ray

If cathode rays are projected at right angles to a magnetic field, their trajectory is:

AAKASH INSTITUTE-MOVING CHARGE AND MAGNESIUM-SECTION C
  1. A square loop, carrying a steady curren I is placed in a horizontal pl...

    Text Solution

    |

  2. A square current carrying loop is suspended in a unifrom magnetic ...

    Text Solution

    |

  3. A beam of cathode rays is subjected to crossed electric (E ) and magn...

    Text Solution

    |

  4. A current loop consists of two identical semicircular parts each of ra...

    Text Solution

    |

  5. A particle having a mass of 10^(-2) kg carries a charge of 5 xx 10^(-8...

    Text Solution

    |

  6. A rectangular, a square , a circular and an elliptical loop, all in th...

    Text Solution

    |

  7. The magnetic force acting on a charged particle of charge -2 muC in ...

    Text Solution

    |

  8. Under the influence of a uniform magnetic field a charged particle mov...

    Text Solution

    |

  9. A particle of mass m, charge q and kinetic energy T enters in a transv...

    Text Solution

    |

  10. A closed loop PQRS carrying a current is place in a unifrom magnetic ...

    Text Solution

    |

  11. A charged particle (charge q) is moving in a circle of radius R wit...

    Text Solution

    |

  12. A beam of electrons passes underfected throgh unifromly perpendicula...

    Text Solution

    |

  13. In mass spectrometer used for measuring the masses of ions, the ion...

    Text Solution

    |

  14. When a charged particle moving with velocity vec(V) is subjected to a...

    Text Solution

    |

  15. Two circular coils 1 and 2 are made from the same wire but the radiu...

    Text Solution

    |

  16. A coil in the shape of an equilateral triangle of side l is suspended ...

    Text Solution

    |

  17. A very long straight wire carries a current I. At the instant when a c...

    Text Solution

    |

  18. An electron moves in a circular orbit with a uniform speed v.It produc...

    Text Solution

    |

  19. A beam of electron is moving with constant velocity in a region having...

    Text Solution

    |

  20. A 10eV electron is circulating in a plane at right angles to a uniform...

    Text Solution

    |