When there is a large difference in the reading of the dry and wet bulb thermometers, it shows that relative humidity is? by Sunday | Jun 14 | Geography WAEC | 0 comments A. low B. moderate C. 100% D. 0% Correct Answer: Option A – low Users Also Read These:When the temperature difference between the wet and…The instrument used for measuring relative humidity…The mass of water vapour in a given volume of air is…Which of the following is used to measure relative humidity?If the partial pressure of water vapour at 27°C is…