Question

Why people sprinkle water outside houses and shops in summer

Answer 1

The water on evaporation results in cooling of the outside of the houses and shops. So as a result the inside also becomes cooler.

Please mark as brainliest if it helps

Answer 2

When water at room temperature is sprinkled on a hot surface like rooftop, the heat flow from surface to water molecules takes place, which leads to vaporization of water. This causes a cooling effect. 
hope it helps you friend.

@ sk