question_answer

                                  A uniform electric field \[\vec{E}\] exists between the plates of a charged condenser. A charged particle enters the space between the plates and perpendicular to \[\vec{E}\]. The path of the particle between the plates is a:                     JEE Main Online Paper (Held On 09 April 2013)

A)                 straight line                                       

B)                 hyperbola                                          

C)                 parabola                                             

D)                 circle                

Correct Answer: C

Solution :

                Hence, continuously a force exerting on the particle perpendicular for to its velocity or speed. Hence path is projectile must be parabola. As in the projectile motion.