A proton of mass 1.67 x 102"kg and charge 1.6 x 10 1C is projected with a speed of 2 x 10ms1 at an angle of 60 to the X-axis.If a uniform magnetic filed of o.104 tesla is applied along Y-axis, the path of proton is A circle of radius= 0.2 m and time period =2n x 10-7s A A circle of radius= 0.1 m and time period =2n x 10-s B A helix of radius= 0.1 m and time period =2n x 10-'s A helix of radius= 0.2 m and time period =4n x 10-'s A proton of mass 1.67 x 102"kg and charge 1.6 x 10 1C is projected with a speed of 2 x 10ms1 at an angle of 60 to the X-axis.If a uniform magnetic filed of o.104 tesla is applied along Y-axis, the path of proton is A circle of radius= 0.2 m and time period =2n x 10-7s A A circle of radius= 0.1 m and time period =2n x 10-s B A helix of radius= 0.1 m and time period =2n x 10-'s A helix of radius= 0.2 m and time period =4n x 10-'s