NEET2010PhysicsElectrostaticsActual
A particle having a mass of 10⁻² ~kg carries a charge of 5 10⁻⁸ C . The particle is given an initial horizontal velocity of 10^5 ~ms ⁻¹ in the presence of electric field E and magnetic field B . To keep the particle moving in a horizontal direction, it is necessary that (1) B should be perpendicular to the direction of velocity and E should be along the direction of velocity. (2) Both B and E should be along the dire
Options
- A(1) and (3)
- B(3) and (4)
- C(2) and (3)
- D(2) and (4)
Correct answer
C. (2) and (3)
Step-by-step solution
Both B and E should be along the direction of velocity and both B and E are mutually perpendicular and perpendicular to the direction of velocity.