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When an electron is accelerated through a p.d. V, it experiences a force F through à magnetic field. It the P.D is increased to 2V, the force experienced by the electron in the same magnetic 1. field is a) 2F b) 2.2F c) 2F d) 4F

When an electron is accelerated through a p.d. V, it experiences a force F through à magnetic field. It the P.D is increased to 2V, the force experienced by the electron in the same magnetic 1. field is a) 2F b) 2.2F c) 2F d) 4F

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When an electron is accelerated through a p.d. V, it experiences a force F through a uniform transverse magnetic field. It the P.D is increased to 2V, the force experienced by the electron in the same magnetic 1. field is a) 2F b) 2.2F c) 2F d) 4F Among the following particles, which will describe the smallest circle when projected with the same velocity perpendicular to a magnetic field a) electron 2. b) proton c) He* d) Lit A beam consisting of protons and electrons moving at the same speed goes through a thin region in which there is a magnetic field perpendicular to the beam. The protons and the electrons a) will go undeviated b) will be deviated by the same angle and will not seperate c) will be deviated by different angles and hence separate d) will be deviated by the same angle but will separate 3. Two ions have equal masses but one is singly ionized and the other is doubly ionized. They are projected from the same place in a uniform magnetic field with the same velocity perpendicular to the [ ] 4. field then a) both ions will go along circles of equal radii b) the circle described by the singly ionized charge will have a radius double that of the other circle. c) the two circles do not touch each other d) the two circles touch each other. The path of a charged particle moving in a magnetic field can be b) circle [ ] 5. a) straight line c) parabola d) helix 6. The force acting on a charge q moving with a velocity y in a magnetic field Induction R is given by a) (VxB) (V×B) b) c) q(V ×B d) q(V.B) [ ] Among the following that cannot be deflected by a magnetic field is b) Beta rays [ ] 7. a) Alpha rays c) Gamma rays d) cosmic rays 8. In the following one, when in motion cannot be deflected by the magnetic field is a) electron b) proton c) neutron d) Ion A particle of charge q is stationary at a place where the magnetic field is B along the X-axis. The force on the charge due to B is a) proportional to qB along x-direction 9. b) proportional to q°B along y-direction c) zero d) proportional to qVB in y - z plane An electric charge q moves with a constant velocity V parallel to the lines of forces of a uniform mag- netic field B. The force experienced by the charge is 10. qV b) B BV d) a) qVB c) zero
Transcribed Image Text:When an electron is accelerated through a p.d. V, it experiences a force F through a uniform transverse magnetic field. It the P.D is increased to 2V, the force experienced by the electron in the same magnetic 1. field is a) 2F b) 2.2F c) 2F d) 4F Among the following particles, which will describe the smallest circle when projected with the same velocity perpendicular to a magnetic field a) electron 2. b) proton c) He* d) Lit A beam consisting of protons and electrons moving at the same speed goes through a thin region in which there is a magnetic field perpendicular to the beam. The protons and the electrons a) will go undeviated b) will be deviated by the same angle and will not seperate c) will be deviated by different angles and hence separate d) will be deviated by the same angle but will separate 3. Two ions have equal masses but one is singly ionized and the other is doubly ionized. They are projected from the same place in a uniform magnetic field with the same velocity perpendicular to the [ ] 4. field then a) both ions will go along circles of equal radii b) the circle described by the singly ionized charge will have a radius double that of the other circle. c) the two circles do not touch each other d) the two circles touch each other. The path of a charged particle moving in a magnetic field can be b) circle [ ] 5. a) straight line c) parabola d) helix 6. The force acting on a charge q moving with a velocity y in a magnetic field Induction R is given by a) (VxB) (V×B) b) c) q(V ×B d) q(V.B) [ ] Among the following that cannot be deflected by a magnetic field is b) Beta rays [ ] 7. a) Alpha rays c) Gamma rays d) cosmic rays 8. In the following one, when in motion cannot be deflected by the magnetic field is a) electron b) proton c) neutron d) Ion A particle of charge q is stationary at a place where the magnetic field is B along the X-axis. The force on the charge due to B is a) proportional to qB along x-direction 9. b) proportional to q°B along y-direction c) zero d) proportional to qVB in y - z plane An electric charge q moves with a constant velocity V parallel to the lines of forces of a uniform mag- netic field B. The force experienced by the charge is 10. qV b) B BV d) a) qVB c) zero
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