Question:-
If pa and pv denote respectively the partial pressure of dry air and that of water vapour in moist air, the specific humidity of air is given by
Option (A)
Pv / (Pa + Pv)
Option (B)
Pv / Pa
Option(C)
0.622Pv / Pa
Option(D)
0.622Pv / (Pa + Pv)
Correct Option:
(C)
Question Solution:
Humidity ratio = (mv/ma) = (RaPv / RvPa)
= (0.287Pv/0.416Pa) = (0.622Pv/Pa) = 0.622Pv/(Ps-Pv)
question-answer-faq-9421