Home
Class 12
PHYSICS
A particle of charge per unit mass alpha...

A particle of charge per unit mass `alpha` is released from origin with a velocity `vecv=v_(0)hati` uniform magnetic field `vecB=-B_(0)hatk`. If the particle passes through `(0,y,0)`, then `y` is equal to

A

`-(2v_(0))/(B_(0)alpha)`

B

`(v_(0))/(B_(0)alpha)`

C

`(2v_(0))/(B_(0)alpha)`

D

`-(v_(0))/(B_(0)alpha)`

Text Solution

Verified by Experts

The correct Answer is:
C

`y=2r=(2mv_(0))/(B_(0)q)`
`:. (q)/(m)=alphaimpliesy=(2v_(0))/(B_(0)alpha)`
Promotional Banner

Topper's Solved these Questions

  • REVISION TEST 1

    CAREER POINT|Exercise PHYSICS|30 Videos

  • UNIT TEST 1

    CAREER POINT|Exercise PHYSICS|30 Videos

Similar Questions

Explore conceptually related problems

A proton is fired from origin with velocity vecv=v_0hatj+v_0hatk in a uniform magnetic field vecB=B_0hatj .

A particle of charge per unit mass alpha is released from origin with a velocity vecv=v_(0)hati in a magnetic field vec(B)=-B_(0)hatk for xle(sqrt(3))/2 (v_(0))/(B_(0)alpha) and vec(B)=0 for xgt(sqrt(3))/2 (v_(0))/(B_(0)alpha) The x -coordinate of the particle at time t((pi)/(3B_(0)alpha)) would be

A particle of charge per unit mass alpha is released from origin with velocity vec v = v_0 hat i in a magnetic field vec B = -B_0 hat k for x le sqrt 3/2 v_0/(B_0 alpha) and vec B = 0 for x gt sqrt 3/2 v_0/(B_0 alpha) The x-coordinate of the particle at time t(gt pi/(3B_0 alpha)) would be

A charged particle of specific charge (charge/mass) alpha released from origin at time t=0 with velocity vec v = v_0 (hat i + hat j) in uniform magnetic field vec B = B_0 hat i. Coordinates of the particle at time t= pi//(B_0 alpha) are

A charge praticule of sepeific charge (charge/ mass ) alpha is realsed from origin at time t=0 with velocity v= v_(0)(hati+hatj) in unifrom magnetic fields B= B_(0)hati . Co-ordinaties of the particle at time t = (pi)/(B_(0)alpha) are

A particle of specific charge 'alpha' is projected from origin at t=0 with a velocity vec(V)=V_(0) (hat(i)-hat(k)) in a magnetic field vec(B)= -B_(0)hat(k) . Then : (Mass of particle =1 unit)

The electric field acts positive x -axis. A charged particle of charge q and mass m is released from origin and moves with velocity vec(v)=v_(0)hatj under the action of electric field and magnetic field, vec(B)=B_(0)hati . The velocity of particle becomes 2v_(0) after time (sqrt(3)mv_(0))/(sqrt(2)qE_(0)) . find the electric field:

A particle of specific charge alpha is projected from origin with velocity v=v_0hati-v_0hatk in a uniform magnetic field B=-B_0hatk . Find time dependence of velocity and position of the particle.

A particle of mass m and having a positive charge q is projected from origin with speed v_(0) along the positive X-axis in a magnetic field B = -B_(0)hatK , where B_(0) is a positive constant. If the particle passes through (0,y,0), then y is equal to

CAREER POINT-REVISION TEST 2-PHYSICS
  1. The potential difference between the points V and B in the following c...

    Text Solution

    |

  2. The resistance P, Q and R in the circuit have equal resistance. T...

    Text Solution

    |

  3. A particle of charge per unit mass alpha is released from origin with ...

    Text Solution

    |

  4. Equal currents i=1 A are flowing through the wires parallel to y-axis ...

    Text Solution

    |

  5. A dip circle is so set that the dip needle moves freely in the magneti...

    Text Solution

    |

  6. A coil having an inductance of 1//pi henry is connected in series with...

    Text Solution

    |

  7. A transformer with efficiency 80% works at 4 kW and 100 V. If the seco...

    Text Solution

    |

  8. In the circuit shown in fig., the cell is ideal. The coil has an induc...

    Text Solution

    |

  9. A square wire of side 3.0 cm is placed 25 cm away from a concave mirro...

    Text Solution

    |

  10. A point object is placed at distance of 20 cm from a thin plane - con...

    Text Solution

    |

  11. A ray of light is incident at an angle of 60^(@) on one face of a 30^(...

    Text Solution

    |

  12. To make the central fringe at the centerO , mica sheet of refractive i...

    Text Solution

    |

  13. Green light of wavelength 5100 Å from a narrow slit is incident on a d...

    Text Solution

    |

  14. A person is not able to see objects farther than 80 cm clearly, while ...

    Text Solution

    |

  15. Radiation coming from transition n = 2 to n = 1 of hydrogen atoms fall...

    Text Solution

    |

  16. An electron with speed v and a photon with speed c have the same de-Br...

    Text Solution

    |

  17. A radioactive element X converts into another stable elemnet Y. Half-l...

    Text Solution

    |

  18. If mass of U^(235)=235.12142 a.m.u., mass of U^(236) =236.1205 amu, an...

    Text Solution

    |

  19. The expression of Y in following circuit is .

    Text Solution

    |

  20. The current flowing through the zener diode in figure is -

    Text Solution

    |