Question

on a hot sunny day people Sprinkle water on the roof or open ground give reason​

Answer 1

Answer:

Miraj is the phenomenon which leads to the pseudo appearance of the water on the road.

Answer 2

ANSWER:  

People sprinkle water on roofs and ground on a sunny day to get cooling effect.

EXPLANATION:

On a sunny day, the ground and roof of a house becomes too hot and when water is being sprinkled in ground it gets evaporated too fast which in turns reduces the temperature of the road.

The latent heat that water requires for the purpose of evaporation is absorbed by the water from the hot ground surface, so it eventually reduces the hotness.