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JEE Main 9 Jan 2020 Shift 1 Solved Paper

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Question : 16

Total: 75

A charged particle of mass 'm' and charge 'q' moving under the influence of uniform electric field E

and a uniform magnetic field B

follows a trajectory from point P to Q as shown in figure. The velocities at P and Q are respectively, v

. Then which of the following statements (A, B, C, D) are the correct ? (Trajectory shown is schematic and not to scale) :

)
(B) Rate of work done by the electric field at P is

)
(C) Rate of work done by both the fields at Q is zero
(D) The difference between the magnitude of angular momentum of the particle at P and Q is 2 mav.

(A), (B), (C), (D)
(A), (B), (C)
(B), (C), (D)
(A), (C), (D)

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