Which among the following cause(s) the generation of the Van Allen belts?
1. Refraction of sunlight
2. Charged particles trapped in the earth’s magnetic field.
3. Reflection of polar snow.
4. Precession of earth
Choose the correct option from the codes given below:

Answer: [B] Only 2

The remaining 3 options are just to populate options and try to trap you. Here, the first option should catch your attention, but it is not correct to say that refraction of sunlight has any role in generation of the Van Allen Belts. The motions of charged particles in a magnetic field would be controlled by several factors and major among them is the Lorentz force, which deflects the charged particles entering a magnetic field at right angles to the field and also at right angles to their previous direction of motion.

This question is a part of GKToday's Integrated IAS General Studies Module