Chemistry · Structure of atom

In an \( \alpha \)-particle scattering experiment, if \( N \) represents the number of \( \alpha \)-particles scattered at an angle \( \theta \), how does \( N \) generally vary with increasing scattering angle \( \theta \)?

1. Decreases sharply as \( \theta \) increases
2. Increases exponentially
3. Remains completely constant
4. First increases and then drops to zero