Question

Relative humidity is the percentage of the
(A) absolute humidity value to the amount of humidity actually present.
(B) increase of humidity/ absolute humidity.
(C) amount of humidity actually presents to the absolute humidity
(D) none of these

Answer 1

Hint: We know that the Humidity Ratio is how much 'air' is in the air versus the amount of water. Relative Humidity on the other hand, takes the humidity ratio, and includes the air temperature, and the maximum amount of water the air can hold, and displays it as a percentage. Relative humidity is normally expressed as a percentage; a higher percentage means that the air-water mixture is more humid. Relative humidity is an important metric used in weather forecasts and reports, as it is an indicator of the likelihood of precipitation, dew, or fog.

Complete step by step answer
We know that the amount of water vapor in the air, expressed as a percentage of the maximum amount that the air could hold at the given temperature; the ratio of the actual water vapor pressure to the saturation vapor pressure.
Relative humidity is the percentage of amount of humidity actually present to the absolute humidity. The ratio of the actual amount of water vapour present in the volume of air at a given temperature to the maximum amount that air would hold at that temperature, expressed as percentage is relative humidity.
Hence, we can say that relative humidity is the percentage of the amount of humidity actually present to the absolute humidity.

So, the correct answer is option C.

Note: We know that the ideal relative humidity for health and comfort is somewhere between 30-50% humidity, according to the Mayo Clinic. This means that the air holds between 30-50% of the maximum amount of moisture it can contain. The temperature usually drops during the night. The relative humidity is usually higher at night. If the moisture in the air remains unchanged and the temperature rises, the maximum amount of moisture that the air could hold increases. People typically find a relative humidity between 30 to 60 per cent most comfortable. Relative humidity is a way of describing how much humidity (or water vapour) is in the air, compared to the maximum amount the air can hold at that temperature. Warm air can hold more water vapour than cold air.