A beam of light travels fastest in air compared to water, plastic, and glass. Although light travels slower in air than in a vacuum, air is still the medium among the options listed where light travels at the highest speed. So, the answer is Air.
Among the substances listed, in which one does a beam of light travel at the highest speed?
(1 point)
Responses
Air
Air
Water
Water
Plastic
Plastic
Glass
1 answer