Among the substances listed, in which one does a beam of light travel at the highest speed? (1 point) Responses Glass Glass Water Water Plastic Plastic Air
Apologies for the discrepancy. The correct option is glass. A beam of light typically travels at its highest speed in a vacuum, but among the substances listed, glass would have a higher refractive index compared to air, water, and plastic, leading to a slower speed of light propagation.
