Question

Pre Test Study help not actual test like I put earlier

Answer 1

Donna shines a flashlight and a laser pointer on a sheet of paper. She holds each device at an equal distance from the paper. How does the light hitting the paper from each device appear different?

The light from the flashlight lights up a larger area of the paper.
The light from the laser pointer lights up a larger area of the paper.
The light from the flashlight magnifies a larger area of the paper.
The light from the laser pointer magnifies a larger area of the paper.

Answer 2

Both flashlight and laser emit light. The difference is that the flashlight emits light by spontaneous emission and there are many light waves with different frequencies and has no preferential way of travel. The light waves in the laser beam on the other hand are at the same frequency and all waves have the same direction. According to this, the following statement is correct: The light from the flashlight lights up a larger area of the paper.