Sound and Light: Reflection and Refraction of Light

The video tutorial explains the phenomenon of light refraction, where light changes its path when moving between different transparent media. It guides viewers through an experiment to observe refraction using a glass block, laser pen, and other materials. The steps include setting up the experiment, directing a laser to observe the incident and emergent rays, and measuring angles to understand the refraction process. The experiment concludes with the observation that light paths change due to varying optical densities.

What measurements are taken using the protractor in the experiment?

What conclusion can be drawn about light traveling from one transparent medium to another of different optical density?