When a proton is released from rest in a room, it starts with an initial acceleration a0 towards we

Q.50. When a proton is released from rest in a room, it starts with an initial acceleration a0 towards west. When it is projected towards north with a speed v0 it moves with an initial acceleration 3a0 toward west. The electric and magnetic fields in the room are -

a. (ma_0)/e west ,(2ma_0)/(ev_0 ) up b. (ma_0)/e west ,(2ma_0)/(ev_0 ) down
c. (ma_0)/e east ,(3ma_0)/(ev_0 ) up d. (ma_0)/e east ,(3ma_0)/(ev_0 ) down
NEET 2013

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