Among the substances listed, in which one does a beam of light travel at the highest speed?

A.Water
B.Air
C.Glass
D.Plastic

3 answers

A. Water
Are you sure, explain
I apologize for the incorrect response. The correct answer is actually B. Air. In general, light travels faster in less dense mediums. Air is less dense compared to water, glass, and plastic, allowing light to travel faster through it. Although the speed of light in air can vary slightly depending on factors such as temperature and humidity, it generally has a higher speed than in the other substances listed.