1.

Electrons move at right angles to a magnetic field of \[1.5\times {{10}^{-2}}\]Tesla with a speed of \[6\times {{10}^{7}}m/s.\]If the specific charge of the electron is \[1.7\times {{10}^{11}}\]C/kg. The radius of the circular path will be                                                         [BHU 2003]

A.            2.9 cm                                     
B.            3.9 cm
C.            2.35 cm                                   
D.            3 cm
Answer» D.            3 cm


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