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  • 1. 
    Tesla is a unit of:

  • electric flux
  • magnetic flux
  • magnetic field
  • electric field
  • 2. 
    10 eV electron is circulating in a plane at right angle to a uniform field of magnetic induction 10-1 Wb/m² (1G). The orbital radius of electron is:

  • 12 cm
  • 16 cm
  • 11 cm
  • 18 cm
  • 3. 
    A cyclotron can be used to produce high energy:

  • neutrons
  • deutrons
  • β particles
  • α partifcles
  • 4. 
    The radius of the trajectory of a charged particle in a uniform magnetic field is proportional to the:

  • charge on the particle
  • energy of the particle
  • momentum of the particle
  • all the above
  • 5. 
    The force F experienced by a particle of charge q moving with velocity v in a magnetic field \(\vec{B\) is given by,

  • F = q(F × B)
  • F = q(B × (b)
  • F = q(v × (B)
  • F = q(v × B)
  • 6. 
    The torque acting on a magnetic dipole of moment [latex]\vec{p_m}[/latex] when placed in a magnetic field B is:

  • pmB
  • pm× B
  • pmB
  • pmB
  • 7. 
    In thomson spectrograph EB, then velocity of electron beam will be:

  • |E|/|B|
  • E × B
  • |B|/|E|
  • E² / B²
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