Wave Nature of Light: Light Intensity

The video tutorial explains the concept of light intensity and its relationship with distance. Through a simple experiment using a torch and a wall, it demonstrates that light intensity decreases as the distance from the light source increases, establishing an inverse relationship. The tutorial concludes by defining light intensity as the quantity of light falling perpendicularly on a unit area of a surface in one second.

What did you notice during the experiment when the distance was increased to 2 meters and then 3 meters?

Explain what is meant by light intensity in the context of this experiment.