JEE Main 2007 Physics question

Physics Moving Charges and Magnetism JEE Main 2007

A charged particle moves through a magnetic field perpendicular to its direction. Then

(1)the momentum changes but the kinetic energy is constantCorrect
(2)both momentum and kinetic energy of the particle are not constant
(3)both, momentum and kinetic energy of the particle are constant
(4)kinetic energy changes but the momentum is constant

Answer: (1)

Solution

The magnetic force is perpendicular to the velocity: it changes the direction of

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Question ID VK-038915