Define relative humidity . OR
What is relative humidity ?
Write the formula for % relative humidity .

What is humidity ?

Define relative humidity. State its S.I. unit.

Define absolute humidity. OR Whatis absolute humidity ?State its unit.

Relative humidity id defind as the ration of partial pressure of water in air at a given temperature to the vapour pressure of water at that that temperature Calculate the mass of water per litre air at (a) 20^(@)C and 45% relative humidity (b) 0^(@)C and 95% relative humidity (c ) Discuss wether temperature or relative humidity has the greater effect on the mass of water vapour in air Given P_(H_(2)O)^(@) =17.5 torr at 20^(@)C and 4.58 torr 0^(@)C .

Stamata close at relative humidity of

Relative humidity is the percentage of the