An electron enters in a uniform magnetic field making an angle 60o with field. The shape of its trajectory in magnetic field is:

Explanation

Option D is correct.A charged particle entering a uniform magnetic field with an angle of 60 degrees will follow a helical path. The magnetic force on a charged particle is given by the following equation: F = qvB sin θ where: θ is the angle between the direction of the velocity and the direction of the magnetic field.In this case, the angle between the velocity and the magnetic field is 60°. For this to happen, the condition is sinθ=60°. The maximum value of sine function is 1. When the sine function is 1, the value of the force also becomes maximum