Phineas is sitting at the bottom of a well-lit room with a single window on one wall. He can see the sunlight streaming through the window onto the opposite wall. If Petunia enters the room and stands in the path of the sunlight in front of the window, what happens to the light Phineas sees on the opposite wall?

Respond very briefly.
The light on the opposite wall that Phineas sees will be interrupted by Petunia blocking the sunlight, causing a shadow to appear on the wall. This happens because Petunia obstructs the light's straight-line path from the window to the wall. As long as Petunia is in the path of the light, the shadow will be visible to Phineas on the wall. The specific shape and size of the shadow will depend on Petunia's shape and proximity to the light source.