What does the Inverse Square Law state about radiation intensity?

The Inverse Square Law states that the intensity of radiation or any form of energy diminishes as one moves away from its source. Specifically, the law indicates that the intensity of radiation is inversely proportional to the square of the distance from the source. This means that as you move closer to the source of radiation, the intensity increases because you are encountering more of the energy within a given area.

When considering this law, it illustrates how effective the radiation or energy can be at various distances. When you decrease the distance to the source, the energy is concentrated over a smaller area, leading to a higher intensity. Therefore, the relationship is such that halving the distance to the source results in four times the intensity, emphasizing the squared aspect of distance in the law.

The other options do not align with the principles of this law. For example, suggesting that intensity stays constant or reduces as one moves closer contradicts the fundamental understanding of how energy disperses from a point source.