Sometimes on a hot day a distant dry street appears wet,which is due to
A)water from a previous rainfall.
B)reflection of the sky from the street.
C)refracted sky light.

Question

Quizplus · Accepted Answer

This phenomenon is due to refracted sky light. On hot days, the air near the surface of the road heats up more than the air above it, creating a gradient in air density. Light traveling from the cooler air above to the denser, hotter air near the surface bends (refracts) upwards, creating a mirage that looks like water. This is not due to actual water or a simple reflection of the sky, but rather the bending of light due to the temperature-induced density gradient in the air.

Sometimes on a Hot Day a Distant Dry Street Appears