MagnetismHard
Question
A particle having a mass of 10-2 kg carries a charge of 5 × 10-8C. The particle is given an initial horizontal velocity of 105 m s-1 in the presence of electric field 
and magnetic field B. To keep the particle moving in a horizontal direction, it is necessary that
(1)
should be perpendicular to the direction of velocity and 
hould be along the direction of velocity
(2) Both
should be along the direction of velocity
(3) Both are mutually perpendicular and perpendicular to the direction of velocity
(4)
should be along the direction of velocity and 
hould be perpendicular to the direction of velocity
Which one of the following pairs of statements is possible?
and magnetic field B. To keep the particle moving in a horizontal direction, it is necessary that (1)
should be perpendicular to the direction of velocity and hould be along the direction of velocity (2) Both
should be along the direction of velocity (3) Both
are mutually perpendicular and perpendicular to the direction of velocity (4)
should be along the direction of velocity and hould be perpendicular to the direction of velocity Which one of the following pairs of statements is possible?
Options
A.(2) and (3)
B.(3) and (4)
C.(2) and (3)
D.(2) and (4)
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