The temperature at which the water vapour present in the air is just sufficient to saturate it is called the

Answer Details

The temperature at which the water vapor present in the air is just sufficient to saturate it is called the dew point. The air around us can hold a certain amount of water vapor, which is known as its water vapor capacity. The amount of water vapor the air can hold depends on its temperature; warm air can hold more water vapor than cold air. When the air reaches its maximum water vapor capacity, it becomes saturated, and any additional water vapor condenses into liquid form. The temperature at which the air becomes saturated is called the dew point. At this temperature, the air is holding as much moisture as it can, and any additional cooling will cause the excess moisture to condense out of the air, forming dew or frost on surfaces. For example, on a cool morning, the temperature of the grass may be lower than the air temperature. As the air near the grass cools, it may reach its dew point, and the excess moisture in the air will condense onto the grass, forming dew. Therefore, the correct option is the dew point, which is the temperature at which the water vapor present in the air is just sufficient to saturate it.