An electron and a proton are moving on straight parallel paths with same velocity. They enter a semi-infinite region of uniform magnetic field perpendicular to the velocity. Which of the following statement(s) is/are true?
← IIT-JEE 2011 · Paper 1
PhysicsMultiple correct+4Question 32 of 69
IIT-JEE 2011 · Paper 1, Physics question 32
Answer and worked solution
Official answer: B, D
Semicircles. Each particle turns through 180° in the field and comes out moving opposite to its entry direction: the exit paths are parallel (B).
Times. The time in the field is , different for the electron and proton (D).
The official key accepts BC, BD or BCD.
(B), (D) (key: BC, BD, BCD)
Topics:Force on a moving charge