Refraction at Plane Surfaces - Ray Optics
Module 1: Snell's Law of Refraction Refraction occurs when light passes from one medium to another, bending due to a change in speed. **Snell's Law** states: \[ n_1 \sin \theta_1 = n_2 \sin \theta_2 \] Where: - \( n_1 \) and \( n_2 \) are refractive indices of the media, - \( \theta_1 \) is the angle of incidence, and \( \theta_2 \) is the angle of refraction.
1. What happens to the speed of light when it enters a denser medium?
2. Snell's Law relates:
3. If \( n_1 > n_2 \), what happens to the refracted ray?
4. The unit of refractive index is:
5. In which medium is the speed of light maximum?
