A particle having the same charge as of electron moves in a circular path of radius 0.5cm under the influence of a magnetic field of 0.5T. If an electric field of 100V/m makes it to move in a straight path, then the mass of the particle is (Given charge of electron 1.6 x 10–19 C)
(1) 2.0 x 10–24kg
(2) 1.6 x 10–19 kg
(3) 1.6 x 10–27kg
(4) 9.1 x 10–31kg
