Answer : Its relative humidity is, 20 %
Explanation :
Relative humidity : It is defined as the ratio of the partial pressure of water vapor to the vapor pressure of water at a given temperature.
It is expressed in percentage.
The formula used for relative humidity is:
\(\text{Relative humidity}=\frac{\text{Actual water vapor}}{\text{Saturated water vapor}}\times 100\)
\(\text{Relative humidity}=\frac{2g}{10g}\times 100=20\%\)
Hence, its relative humidity is, 20 %
